Find Your Next 5K Colorado Race


Each 5K Colorado race has links to its marketing page and registration page.

View all races in Colorado

ASU Race Against Suicide

Sep 16, 2026 (Estimated)

ASU Race for Mental Health Awareness

Sep 16, 2026 (Estimated)

Run passed Leukemia

Jun 29, 2026 (Estimated)

Hope House 5K

Apr 5, 2026 (Estimated)

Jace's Kickin' Kawasaki 5K - Arvada, CO

Aug 27, 2026 (Estimated)

Lincoln Academy Tech Trek

May 5, 2026 (Estimated)

Lincoln Academy Tech Trek 5k

May 5, 2026 (Estimated) 2 reviews

Panther Prowl

Aug 17, 2026 (Estimated) 1 reviews

West Side Best Side Cross Country Race-NAAC

Feb 25, 2027 (Estimated)

Boogie's Buddy Race

Jul 4, 2026 (Estimated)

2025 Always Hope Easter Run 5K/10K/13.1 DENVER/AURORA

Apr 19, 2026 (Estimated)

2025 Cinco De Mayo Run Against All Odds DENVER/AURORA

May 3, 2026 (Estimated)

2025 Father's Day Fun Run 5K/10K/13.1 DENVER/AURORA

Jun 14, 2026 (Estimated)

2025 July 4th Freedom Run 5K/10K/13.1 DENVER/AURORA

Jul 5, 2026 (Estimated)

2025 Labor Day Run 5K/10K/13.1 DENVER/AURORA

Aug 30, 2026 (Estimated)

2025 Muffin Marathon 5K/10K/13.1 Hybrid Race DENVER/AURORA

Feb 22, 2027 (Estimated)

2025 National Chocolate Day Run for Chocolates DENVER/AURORA

Sep 13, 2026 (Estimated)

2025 Thanksgiving Turkey Gobble Trot 5K/10K/13.1 DENVER/AURORA

Nov 29, 2026 (Estimated)

2025 The Cookie Dash Hybrid Race DENVER/AURORA

Jan 25, 2027 (Estimated)

2025 Together Against Breast CanTogether Against Breast Cancer 5K/10K/13.1 DENVER/AURORA

Feb 1, 2027 (Estimated)

2025 Valentines Live, Love, RUN 5K/10K/13.1 DENVER/AURORA

Feb 15, 2027 (Estimated)

A Merry Christmas Run 5K/10K/13.1 DENVER/AURORA 2025

Dec 27, 2026 (Estimated)

Always Hope Easter Run DENVER/AURORA

Saturday Apr 4, 2026

August Run for Coffee Lovers 5K/10K/13.1 DENVER/AURORA

Aug 2, 2026 (Estimated)

Cheers to Oktoberfest Run 5K/10K/13.1 DENVER/AURORA 2025

Oct 4, 2026 (Estimated)

Cinco De Mayo Run DENVER/AURORA

Saturday May 2, 2026

Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA

Jan 18, 2027 (Estimated)

Coffee Lovers Run HOUSTON

Saturday Apr 25, 2026

eterans Day Freedom Run 5K/10K/13.1 DENVER/AURORA 2025

Nov 15, 2026 (Estimated)

Gobble Run Turkey Trot 5K/10K/13.1 DENVER

Nov 25, 2026 (Estimated)

Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA 2025

Nov 1, 2026 (Estimated)

July 4th Run DENVER/AURORA

Saturday Jul 4, 2026

Lunar New Year Run DENVER/AURORA

Feb 7, 2027 (Estimated)

Memorial Day Run DENVER/AURORA

Saturday May 23, 2026

MLK Freedom Run DENVER/AURORA

Jan 17, 2027 (Estimated)

National Chocolate Day Run for Chocolates DENVER/AURORA

Saturday Sep 12, 2026

Never Let Go Run, Stroll, Walk 5K

Sep 23, 2026 (Estimated)

New Year New Me Run DENVER/AURORA

Jan 3, 2027 (Estimated)

Run Against Breast Cancer 5K/10K/13.1 DENVER/AURORA 2025

Oct 18, 2026 (Estimated)

Run Denver 'Mile High City' 5K/10K/13.1

Nov 25, 2026 (Estimated)

Run for Breast Cancer DENVER/AURORA

Saturday Jun 6, 2026

Run for Coffee Lovers DENVER/AURORA

Saturday Jul 25, 2026

Run for Mental Health DENVER/AURORA

Mar 7, 2027 (Estimated)

Run for Palestine Reach for Education Denver, CO

Aug 21, 2026 (Estimated)

Run for PB& J DENVER/AURORA

Saturday Aug 15, 2026

Run Juneteenth Day DENVER/AURORA

Saturday Jun 20, 2026

Sloth Run DENVER/AURORA

Saturday Aug 29, 2026

Sloth Runners Club Virtual Run DENVER

May 4, 2026 (Estimated)

Sloth Runners Club Virtual Run DENVER 0511

May 11, 2026 (Estimated)

Sloth Runners Club Virtual Run PHOENIX

May 11, 2026 (Estimated)

St Paddy's Day Lucky Run DENVER/AURORA

Mar 14, 2027 (Estimated)

Valentines Live, Love, RUN DENVER/AURORA

Feb 14, 2027 (Estimated)

Basalt Education Foundation Turkey Trot

Nov 23, 2026 (Estimated)

Summer Solstice

Jun 22, 2026 (Estimated)

Berthoud Spartans 5k

Jun 3, 2026 (Estimated) 7 reviews

Crested Crane Dash

May 2, 2026 (Estimated)

Engineers Without Borders Paraguay 5K

Apr 22, 2026 (Estimated)

Mountain 5K

Aug 10, 2026 (Estimated)

Summit Trail Running Series 1

Jun 1, 2026 (Estimated)

Summit Trail Running Series 2

Jun 15, 2026 (Estimated)

Summit Trail Running Series 3

Jul 6, 2026 (Estimated)

Summit Trail Running Series 4

Jul 20, 2026 (Estimated)

Summit Trail Running Series 5

Aug 3, 2026 (Estimated)

Summit Trail Running Series 6

Aug 24, 2026 (Estimated)

Westlake Middle School 5K Run, Walk, Sleep-In

Apr 23, 2026 (Estimated)

Victims Rights Awareness 5k walk/run

Jun 6, 2026 (Estimated)

Mad Dash for School Cash

May 1, 2026 (Estimated)

Stop Drop and Run FUN RUN

Apr 3, 2026 (Estimated)

Neon 5K Race

Jan 20, 2027 (Estimated)

5k Run to Help Kids Play Sports

Nov 16, 2026 (Estimated)

BIGDOGBRAG ADDED Email List

Mar 20, 2027 (Estimated)

BIGDOGBRAG The Colorado Mud Run

Jun 29, 2026 (Estimated) 26 reviews

Celebrate Our Vets 5k

Nov 11, 2026 (Estimated)

Chasing Santa/Cycling Santa

Dec 2, 2026 (Estimated)

Compassion Community Outreach 5K

Sep 29, 2026 (Estimated)

Hope in Action

Jul 10, 2026 (Estimated)

National Police Week 5k Run/Ruck/Walk

May 14, 2026 (Estimated)

RE/MAX Advantage Fun Run For Charity

Aug 13, 2026 (Estimated)

Shield 616 5K

Sep 16, 2026 (Estimated)

Springs Spree Super Hero 5K

Jun 11, 2026 (Estimated)

The Banning Lewis Ranch Santa Sprint

Dec 14, 2026 (Estimated) 5 reviews

Ugly Christmas Sweater 5K Run 1M Walk/Roll

Dec 9, 2026 (Estimated)

Superhero

Jul 4, 2026 (Estimated)

Freedom Run Colorado

Oct 26, 2026 (Estimated)

Delta Correctional Center 5K Walk/Run to Wellness

May 6, 2026 (Estimated)

5K Pajama Jog Denver

Aug 20, 2026 (Estimated)

AIDS Walk Colorado and 5K Run

Aug 26, 2026 (Estimated) 1 reviews

Park Hill Panther 5K/10K

Nov 8, 2026 (Estimated)

Paws for a Cause with Hannah

Jan 19, 2027 (Estimated)

POTS in Pants-5k

Apr 16, 2026 (Estimated)

Pumpkin Pie 5K/10K

Nov 17, 2026 (Estimated)

The Logan School Finish Line

May 31, 2026 (Estimated)

The Super Run 5K - Denver, CO 2017

Aug 26, 2026 (Estimated)

Vista 5K Run and Walk

Oct 29, 2026 (Estimated)

Paws in the Park

Aug 27, 2026 (Estimated)

Paws in the Park 2017

Aug 5, 2026 (Estimated)

2017 Christmas Fun Run and Walk

Dec 23, 2026 (Estimated)

Christmas Fun Run and Walk

Nov 26, 2026 (Estimated)

Reindeer Dash 5k and 1 Mile

Dec 23, 2026 (Estimated)

jefferson 5k- sprint into spring

Saturday Apr 18, 2026

EK5K Walk/Run

Jun 29, 2026 (Estimated)

4th Annual 5K In My Shoes

Apr 23, 2026 (Estimated)

Carbon Valley Half Marathon & 5K

Saturday May 9, 2026 12 reviews

Carbon Valley Past Participant List

Feb 11, 2027 (Estimated)

RACE SIGN MAP

Jun 15, 2026 (Estimated)

Victims Empowerment Color Run

Jun 11, 2026 (Estimated)

Emergency Services Run to Remember 5K

Dec 31, 2026 (Estimated)

Fort Carson Emergency Services 5K

Sep 14, 2026 (Estimated) 1 reviews

Abilities 5k

Sep 28, 2026 (Estimated) 1 reviews

Annual Arbor Day 5K

Apr 29, 2026 (Estimated) 5 reviews

Arbor Day 5K

Apr 25, 2026 (Estimated) 1 reviews

August 10 - 5k

Aug 10, 2026 (Estimated)

August 17 - 5k

Aug 17, 2026 (Estimated)

August 3 - 5k

Aug 3, 2026 (Estimated)

Be A Hero 5K

Aug 11, 2026 (Estimated)

ChildSafe's Be A Hero 5k

Aug 19, 2026 (Estimated)

CMIYC-PP&Race Day

Feb 9, 2027 (Estimated)

Colorado Run

May 27, 2026 (Estimated) 1 reviews

Father's Day Onsite Reg

Jun 16, 2026 (Estimated)

FireKracker 5K

Jul 2, 2026 (Estimated) 4 reviews

Flying Pig 5K

Apr 5, 2026 (Estimated)

Fort Collins Father's Day 5k

Jun 18, 2026 (Estimated) 1 reviews

Halloween 5k

Oct 31, 2026 (Estimated)

Horsetooth Tri Training- Day Of Registration

Aug 18, 2026 (Estimated)

Human Race - Fort Collins

Aug 7, 2026 (Estimated)

Human Race - Virtual Run

Sep 1, 2026 (Estimated)

Human Race PP Registration

Jul 27, 2026 (Estimated)

July 13 - 5k

Jul 13, 2026 (Estimated)

July 20 - 5k

Jul 20, 2026 (Estimated)

July 27 - 5k

Jul 27, 2026 (Estimated)

July 6 - 5k

Jul 6, 2026 (Estimated)

June 15 - 5k Run

Jun 15, 2026 (Estimated)

June 22 - 5k

Jun 22, 2026 (Estimated)

June 29 - 5k

Jun 29, 2026 (Estimated)

June 29 - Horsetooth Tri Training

Jun 29, 2026 (Estimated)

June 8 - Horsetooth Tri Training

Jun 8, 2026 (Estimated)

Kappa Delta's Halloween Hustle 5K

Oct 28, 2026 (Estimated)

Liberty to Liberty 5k

Sep 16, 2026 (Estimated)

Liberty-2-Liberty Run & Ride

Sep 20, 2026 (Estimated)

Open Water Swim & 5k Run Series

Aug 17, 2026 (Estimated)

Polar 5k & Polar Bear Plunge

Jan 21, 2027 (Estimated) 2 reviews

Run Love 5k/10k

Feb 11, 2027 (Estimated) 1 reviews

Scott's Auto Brakes On Breast Cancer 5K

Oct 23, 2026 (Estimated) 1 reviews

Summer 5k Run Series

Aug 14, 2026 (Estimated)

Summer 5k Series

Aug 18, 2026 (Estimated)

Sweaty Sweater

Dec 10, 2026 (Estimated) 2 reviews

Tri Training Event Day Registration

Aug 15, 2026 (Estimated)

Watermelon 5k Series

Aug 17, 2026 (Estimated)

Wellness Fun Run - Virtual Style

Aug 25, 2026 (Estimated) 1 reviews

2025 National Singles Day Singles & Friends Running DENVER/AURORA

Sep 27, 2026 (Estimated)

Frederick Feeder 5k and 400m Fun Run

Mar 28, 2027 (Estimated)

The Running Dead Zombie Run

Oct 28, 2026 (Estimated)

Zombie 5k Clear Creek County

Jun 10, 2026 (Estimated)

Halloween Hustle for Charity

Oct 19, 2026 (Estimated)

Halloween Hustle for Charity 5k 2023

Oct 28, 2026 (Estimated)

RFWTT-VIRTUAL2020

Jul 11, 2026 (Estimated)

233 Veterans 5k Fun Run

Nov 14, 2026 (Estimated)

Bear Blitz 5K

Apr 15, 2026 (Estimated)

Superhero 5K

Sep 8, 2026 (Estimated) 1 reviews

Too Hot to Trot 5K

Jun 15, 2026 (Estimated)

Camp Out for Kids Get Yo Run On

Aug 28, 2026 (Estimated)

2016 Holly Wog

Jun 11, 2026 (Estimated)

Lafayette Oatmeal 5K

Jan 14, 2027 (Estimated)

National Park Service Centennial 5K

Feb 3, 2027 (Estimated)

Ram Run 5K Run/Walk

Aug 25, 2026 (Estimated) 3 reviews

West Side Best Side Cross Country Race - Stone House Park

Nov 5, 2026 (Estimated)

West Side Best Side Cross Country Race 1

Feb 28, 2027 (Estimated)

Camp Hale Half Marathon

Jul 20, 2026 (Estimated)

Leadville Ski Joring

Mar 4, 2027 (Estimated)

Kick Cancers Butt

Aug 21, 2026 (Estimated)

Mustang Mosey

Sep 28, 2026 (Estimated)

Neon Moms

Sep 9, 2026 (Estimated) 1 reviews

POTS In Pants & Crafts - 5k

Apr 15, 2026 (Estimated)

Respect Life 5K

Saturday Jul 18, 2026 2 reviews

Ruck the Rockies 5K

Nov 13, 2026 (Estimated)

Santa Stampede 5K/10K

Dec 7, 2026 (Estimated)

Snowman Stampede

Feb 24, 2027 (Estimated)

Stepping Stone 5K

Jun 11, 2026 (Estimated)

The Spirit of the Rose

May 23, 2026 (Estimated)

West Side Best Side Cross Country Race - Fehringer Ranch

Apr 8, 2026 (Estimated)

Run for Jonny's 19th Birthday

Apr 14, 2026 (Estimated)

Annual Longmont Triathlon

Jun 3, 2026 (Estimated)

Longmont Kids Only Triathlon

Aug 16, 2026 (Estimated)

Longmont Kids' Only Triathlon, 13th Annual

Jun 3, 2026 (Estimated)

Longmont Triathlon

Aug 22, 2026 (Estimated)

Roger's River Run

Jul 10, 2026 (Estimated)

Roger's River Run 5K

Jul 12, 2026 (Estimated)

Brakes on Breast Cancer 5K and Car Show

Oct 22, 2026 (Estimated)

Earth Day Race

Saturday Apr 25, 2026 2 reviews

Loveland Classic Expo & Race Day

Apr 20, 2026 (Estimated)

Military Appreciation Run

May 18, 2026 (Estimated)

New Vision 5K

May 6, 2026 (Estimated)

Run the Ranch 5K, 10K - Friday

Apr 15, 2026 (Estimated)

Superhero 5k Walk/Run

May 19, 2026 (Estimated)

MeadowGold

Sep 14, 2026 (Estimated)

PYRO'S MEDARIS MADNESS 5K

Sep 9, 2026 (Estimated)

Run Out MS Mothers Day 5k

May 12, 2026 (Estimated)

Cabin Fever

Jan 10, 2027 (Estimated)

PLPOA Give It A Tri - Sprint Triathlon

Aug 24, 2026 (Estimated)

Season Opener

Jan 4, 2027 (Estimated)

Memory Run

Mar 28, 2027 (Estimated)

Palisade Brews and Shoes Half Marathon

May 14, 2026 (Estimated) 9 reviews

Where's The Fruit

Aug 1, 2026 (Estimated)

5KRunDead Zombie Run - Denver, CO

Sep 19, 2026 (Estimated) 1 reviews

Labor Day Mini Marathon

Sep 3, 2026 (Estimated)

Regan's Kickin' Kawasaki 5K - Parker, CO

May 16, 2026 (Estimated)

Run to the Rescue

Apr 22, 2026 (Estimated)

So Long To Summer

Aug 13, 2026 (Estimated)

Miller Farms Summer Solstice 5k

Jun 21, 2026 (Estimated)

Title IX 50th Anniversary 5K

Sep 17, 2026 (Estimated)

Pace for Prevention

Jan 18, 2027 (Estimated)

Spring Into Color

Mar 14, 2027 (Estimated)

Rye's Super 5k

Jun 4, 2026 (Estimated)

New Year's Day 5K

Jan 1, 2027 (Estimated)

5K Vega Color Fun Run

Aug 18, 2026 (Estimated)

Color Blaze 5K Vega Fun Run/Walk

Apr 6, 2026 (Estimated)

Dia De Los Muertos 5K Color Run

Oct 30, 2026 (Estimated)

Founder's Day 5K Color Fun Rn

Mar 2, 2027 (Estimated)

Founder's Day Color Fun Run

Feb 27, 2027 (Estimated)

Founders Day 5k Color Run

Saturday Apr 18, 2026 1 reviews

2020 Freedom Run 5K

Oct 3, 2026 (Estimated)

Run or Walk for Our Community

Sep 17, 2026 (Estimated)

Unity for our Community walk or run

Sep 17, 2026 (Estimated)

5K Z-Zone Zombie Fun Run

Oct 29, 2026 (Estimated)

Super FunDays Color Run

Aug 6, 2026 (Estimated)

Horizon High School Color Run

Apr 22, 2026 (Estimated)

Thornton High School

Mar 11, 2027 (Estimated)

Taste in Timnath Scarecow 5K Fun Run

Aug 18, 2026 (Estimated) 3 reviews

Taste in Timnath Scarecrow 5K

Sep 28, 2026 (Estimated) 1 reviews

The Dead Man 5k Trail Run

Oct 5, 2026 (Estimated)

The Huff and Puff 5k Fun Run

Apr 20, 2026 (Estimated) 1 reviews

10k at 10,000 feet

Aug 24, 2026 (Estimated)

Make Your Dad Sweat Annual Fun Run and Dog Jog

Jun 19, 2026 (Estimated)

Jog in the Bog - Standley Lake High School Boosters

Sep 2, 2026 (Estimated)

Jog in the Bog 5K

Oct 16, 2026 (Estimated)

Semper Fun Run

Sep 20, 2026 (Estimated)

Sparkler 5K

Jun 29, 2026 (Estimated)

TK's 5K

Mar 31, 2027 (Estimated) 1 reviews

Kickin' Kawasaki 5K - Windsor, CO

Oct 12, 2026 (Estimated)

Owen Martin Memorial 5K

Jul 9, 2026 (Estimated)

Paws and Sneakers 5K

Jun 15, 2026 (Estimated) 2 reviews

Tyler3Miler

Apr 28, 2026 (Estimated)

2019 Rio Frio 5k on Ice

Jan 26, 2027 (Estimated)

Alamosa Education Foundation Glow Run

Sep 9, 2026 (Estimated)

Rio Frio 5K on Ice

Jan 28, 2027 (Estimated)

Splashland Kid's Only Triathlon

Aug 19, 2026 (Estimated)

Splashland Sprint Triathlon

Oct 21, 2026 (Estimated)

Run Like the Wind - Allenspark

Jul 22, 2026 (Estimated)

811 Run - 5K Run/Walk

Aug 12, 2026 (Estimated)

All-Out Polar Prowl Half Marathon, 10K & 5K

Jan 14, 2027 (Estimated)

All-Out Runapalooza Half Marathon, 10K, 5K & 1-Mile

Aug 26, 2026 (Estimated)

Arvada Harvest Half Marathon, 10K, 5K & 10-Mile

Sep 9, 2026 (Estimated)

Colorado EDGE 5K Dash

Aug 19, 2026 (Estimated)

Father's Day Classic

Jun 18, 2026 (Estimated)

Lisa Nelson's Mustang Stampede

Sep 30, 2026 (Estimated)

Ralston Creek Half Marathon & 5K

Feb 19, 2027 (Estimated)

Resolute Runner 5K

Jan 1, 2027 (Estimated)

Spring Fling Prairie Dog Half Marathon, 10K & 5K

Apr 9, 2026 (Estimated)

US Marine Corps Memorial 5K/10K

Sep 16, 2026 (Estimated)

America's Uphill

Mar 11, 2027 (Estimated)

Aspen Summit for Life

Dec 3, 2026 (Estimated)

Aspen Turkey Trot

Nov 24, 2026 (Estimated)

Chuck Severy Cross Country Challenge

Oct 8, 2026 (Estimated)

Sheriff's Cup for Hope 5K

Jun 25, 2026 (Estimated)

XTERRA Aspen Valley Triathlon

Aug 19, 2026 (Estimated)

Baseggio Halloween Hustle 5K

Oct 28, 2026 (Estimated)

Dam U Half Marathon & 5K

Sep 10, 2026 (Estimated)

FITNESS Super Hero 5K

Jul 22, 2026 (Estimated)

Gift of Life and Breath 5K

May 20, 2026 (Estimated)

Healthy Kids Running Series - Aurora, CO

Oct 1, 2026 (Estimated)

Race for the Ring

Aug 16, 2026 (Estimated)

Rocky Mountain Brew runs at Cheluna Brewing

Sep 2, 2026 (Estimated)

Tri for the Cure - A Women's Triathlon

Aug 6, 2026 (Estimated) 1 reviews

TriBella Triathlons

Jun 24, 2026 (Estimated)

Bec Tri

Aug 5, 2026 (Estimated)

Dunk-n-Dash

Aug 14, 2026 (Estimated)

XTERRA Beaver Creek Trail Runs

Jul 16, 2026 (Estimated)

XTERRA Mountain Championship & Beaver Creek Sprint

Jul 15, 2026 (Estimated)

Bailey Turkey Trot

Nov 24, 2026 (Estimated)

Sasquatch Shuffle 5K

Oct 1, 2026 (Estimated)

Badges Against Breast Cancer 5K

Oct 21, 2026 (Estimated)

Beaver Creek Trail Half Marathon, 10K & 5K

Aug 13, 2026 (Estimated)

La Sportiva Summer Solstice Trail Run

Jun 24, 2026 (Estimated)

Black Squirrel Half

Sep 9, 2026 (Estimated)

XTERRA Lory Triathlon

Jun 17, 2026 (Estimated)

Fall Family Fun Run

Sep 10, 2026 (Estimated)

Kindness 5K

Mar 25, 2027 (Estimated)

Run for Habitat 5K

Jun 3, 2026 (Estimated)

Beulah Challenge Half Marathon, 10K & 5K

Oct 7, 2026 (Estimated)

Dirty 30 Trail Run

Jun 3, 2026 (Estimated)

5430 Triathlon

Sep 17, 2026 (Estimated)

8-8 Relay

Jul 22, 2026 (Estimated)

Big Gay 5K Boulder

Sep 10, 2026 (Estimated)

Boulder Peak Triathlon

Jul 9, 2026 (Estimated)

Boulder Rez Half Marathon, 10K & 5K

Jun 4, 2026 (Estimated)

Boulder Stroke & Stride Series 1 w/5K Run Option

Jun 1, 2026 (Estimated)

Boulder Sunrise

Jun 25, 2026 (Estimated)

Boulder Sunset

Aug 26, 2026 (Estimated)

Buffalo Run - Boulder

Sep 10, 2026 (Estimated)

ColderBOLDER

Dec 2, 2026 (Estimated)

Colorado Triathlon

Jun 3, 2026 (Estimated)

Dash & Dine 5K Series 1

Apr 11, 2026 (Estimated)

Earn Your Independence 5K

Jul 4, 2026 (Estimated)

EMERGE 5K Helping our Youth Soar

May 6, 2026 (Estimated)

Fit for Christmas 5K

Dec 17, 2026 (Estimated)

Hometown Festival 5K

Sep 4, 2026 (Estimated)

Ironkids Boulder

Jun 10, 2026 (Estimated)

Ironman 70.3 Boulder

Aug 5, 2026 (Estimated)

Ironman Boulder

Jun 11, 2026 (Estimated)

Panicking Poultry Turkey Trot

Nov 19, 2026 (Estimated)

Peace Run - Boulder

Sep 24, 2026 (Estimated)

Pearl Street Mile

Aug 9, 2026 (Estimated)

Pyro Memorial 5K

Apr 23, 2026 (Estimated)

Race For Water

Apr 22, 2026 (Estimated)

Rocky Mountain Brew Runs at Boulder Beer Co

Jun 24, 2026 (Estimated)

Run To The Vote 5K

Nov 6, 2026 (Estimated)

Tri Boulder

Jul 23, 2026 (Estimated)

Breckenridge Oktoberfest 5K Trail Run

Sep 9, 2026 (Estimated)

Breckenridge Resolution Run

Jan 1, 2027 (Estimated)

Spartan Beast - Breckenridge

Aug 26, 2026 (Estimated)

Spartan Sprint - Breckenridge

Aug 27, 2026 (Estimated)

Trick or Trails

Oct 29, 2026 (Estimated)

Adams 12 Five Star 5K for Wellness

May 6, 2026 (Estimated)

Great Relationship Race

Oct 7, 2026 (Estimated)

Legacy Ghost Run

Oct 8, 2026 (Estimated)

Run 4 the H 5K

Sep 10, 2026 (Estimated)

Sean May Memorial Run

May 13, 2026 (Estimated)

Step 4 Life 5K, 10K

Apr 23, 2026 (Estimated)

Turkey Trot 5K - Brighton

Nov 18, 2026 (Estimated)

Turtle Trek - Brighton

Sep 16, 2026 (Estimated)

Broomfield Turkey Day 5K

Nov 23, 2026 (Estimated)

Buffs4Life Kyle MacIntosh Memorial Fun Run

Jun 25, 2026 (Estimated)

Frank Shorter RACE4KIds' Health 5K

Apr 12, 2026 (Estimated)

Frank Shorter RACE4Kids' Health 5K and Expo, Where Science, Engineering and Health Collide4Kids

Apr 9, 2026 (Estimated) 1 reviews

Kohl 5K

May 6, 2026 (Estimated)

Miner Gold Rush

Sep 23, 2026 (Estimated)

Runway 5K Run for the Angels

Oct 7, 2026 (Estimated)

Brush Rush

Jun 24, 2026 (Estimated)

Autumn Color Run Half Marathon, 10K, 5K & Fun Run

Sep 16, 2026 (Estimated)

Collegiate Peaks Trail Run

May 6, 2026 (Estimated)

Independence Day Freedom 5K

Jul 4, 2026 (Estimated)

Sleeping Indian Hill Climb

Oct 1, 2026 (Estimated)

TransRockies Run

Aug 15, 2026 (Estimated)

Tunnels Ten Mile

Aug 12, 2026 (Estimated)

Ruffin' Mudder

Aug 26, 2026 (Estimated)

Rim To Rim Royal Gorge Run

Oct 7, 2026 (Estimated)

runBlossom

May 6, 2026 (Estimated)

runBlossom Half Marathon, 5-Mile, 5K & Kids Run

May 6, 2026 (Estimated)

Castle Pines Run Wild

Aug 27, 2026 (Estimated)

Run the Ridge 5K

Jun 25, 2026 (Estimated)

5K Memorial Run for EPIC for Drug Awareness

Sep 18, 2026 (Estimated)

Cinco de Mayo Trail Run - Castle Rock

May 5, 2026 (Estimated)

Climb 4 Change

May 13, 2026 (Estimated) 1 reviews

Freeze Your Buns Off Run

Feb 4, 2027 (Estimated)

HarvestFest 5K

Oct 15, 2026 (Estimated)

Memorial Day Run - Castle Rock

May 27, 2026 (Estimated)

New Years Eve Rockn Run

Dec 31, 2026 (Estimated)

Reece's Roundup

Jul 15, 2026 (Estimated)

Summer Classic 5K/1M

Aug 20, 2026 (Estimated)

Tri the Rock

May 21, 2026 (Estimated)

Turkey Rock Trot

Nov 23, 2026 (Estimated)

World Orphans Run - Colorado

Sep 23, 2026 (Estimated)

Xterra Trail Race - Castle Rock Colorado

Aug 6, 2026 (Estimated)

Applefest 5K - Cedaredge

Oct 7, 2026 (Estimated)

Drennen's Dreams 5K Splash Dash

Jun 4, 2026 (Estimated)

Grace's Race

May 7, 2026 (Estimated)

High Line Canal Run

May 20, 2026 (Estimated)

Hoofin' It Through the Hollows 5K

Oct 21, 2026 (Estimated)

Lifetime Indoor Triathlon - Centennial, CO

Jan 8, 2027 (Estimated)

MountainChild Run For Hope

Jun 3, 2026 (Estimated)

Nun Run - Centennial

Oct 22, 2026 (Estimated)

Pancakes for PDCD 5K/10K

Aug 19, 2026 (Estimated)

Reverse Indoor TRYathlon

Jan 29, 2027 (Estimated)

South Suburban Youth & Adult Beginner TRYathlon

Jun 25, 2026 (Estimated)

STAR 5K

Sep 11, 2026 (Estimated)

Cherry Hills Chase 5K

Jun 10, 2026 (Estimated)

Cimarron Endurance Race

May 7, 2026 (Estimated)

Hoof It 4 Harlie Half Marathon & 5K

Sep 23, 2026 (Estimated)

5K for St. Patrick's Day

Mar 11, 2027 (Estimated)

Air Academy Volleyball 5K

Sep 16, 2026 (Estimated)

All Breed Rescue & Training's Doggie Dash 5K

Jun 4, 2026 (Estimated)

Be Ovary Aware 5K

Sep 17, 2026 (Estimated)

Be Prepared - Don't be a Zombie - Zombie Run

Sep 24, 2026 (Estimated)

BIGDOGBRAG Colorado Springs Mud Run

Jun 3, 2026 (Estimated)

Blue Moon Trail Run Series

Aug 25, 2026 (Estimated)

Bobcat Trail Race

Oct 22, 2026 (Estimated)

Canya Canon Run Trail Race

Nov 6, 2026 (Estimated)

Cheap 5K

Sep 3, 2026 (Estimated)

Cheyenne Mountain Trail Race

Apr 29, 2026 (Estimated)

Color In Motion 5K - Colorado Springs

Jul 29, 2026 (Estimated)

Great Pumpkin 5K/10K

Oct 7, 2026 (Estimated)

Hams and Hamstrings 5K

Apr 2, 2027 (Estimated)

HEARS 5K

Aug 5, 2026 (Estimated)

Heart Walk Colorado Springs

Jun 9, 2026 (Estimated)

High Drive Challenge

Jun 4, 2026 (Estimated)

Jeffrey Ray Davis Sepsis Challenge 5K

Jul 8, 2026 (Estimated) 1 reviews

Judicial District Crime Victims' Rights Week 5K

Apr 15, 2026 (Estimated)

Kokopelli Kids Trail Running Series

May 5, 2026 (Estimated)

Komen Colorado South Race for the Cure

Sep 10, 2026 (Estimated)

Lifetime Indoor Triathlon - Colorado Springs, CO

Jan 8, 2027 (Estimated)

National Mill Dog Rescue Dog Jog

Aug 19, 2026 (Estimated)

National Veterans Day Run - Colorado Springs

Nov 11, 2026 (Estimated)

Never Alone Foundation 5K

Aug 19, 2026 (Estimated)

Nielson Two Mile Challenge

Jul 8, 2026 (Estimated)

Pikes Peak Region Peace Officers Memorial Valor Run

May 20, 2026 (Estimated)

Protect the Children 5K

Apr 22, 2026 (Estimated)

Purple Run - Colorado Springs

Apr 2, 2027 (Estimated)

Rattler Trail Race

Apr 15, 2026 (Estimated)

Red Rose Run - Colorado Springs

Sep 25, 2026 (Estimated)

Rescue Run - Colorado Springs

Jan 1, 2027 (Estimated)

Rise Up 5k - Colorado Springs CO

Jul 1, 2026 (Estimated)

Rocky Mountain State Games Triathlon

Jul 23, 2026 (Estimated)

Ruffin' Zombies

Oct 28, 2026 (Estimated)

Run for Rwanda 5K

Aug 5, 2026 (Estimated)

Run to the Shrine

May 20, 2026 (Estimated)

Southeast Springs 5K

Aug 5, 2026 (Estimated)

Support the Sport 5K

Sep 30, 2026 (Estimated)

Take 5 in the Garden

May 6, 2026 (Estimated)

The NOMAD

Jun 1, 2026 (Estimated)

Tiger Classic 5K

Oct 15, 2026 (Estimated)

Tortoise & Hare

Apr 8, 2026 (Estimated)

Trek The Trail 5K

Oct 15, 2026 (Estimated)

Turkey Trot Predict

Nov 18, 2026 (Estimated)

UCCS Bash the Bluffs 5K

Apr 22, 2026 (Estimated)

USA Triathlon Youth Splash and Dash

Aug 19, 2026 (Estimated)

USATri60 Indoor Triathlon

Mar 4, 2027 (Estimated)

Waldo Waldo 5K

Oct 21, 2026 (Estimated)

Winter Series

Feb 25, 2027 (Estimated)

Women's Distance Festival - Colorado Springs

May 20, 2026 (Estimated)

YMCA / Kaiser Permanente Turkey Trot 5K

Nov 23, 2026 (Estimated)

Color Fun Fest 5K Denver

Jun 24, 2026 (Estimated)

Colorado Rapids 5K and Dribble

Oct 23, 2026 (Estimated)

Foam Glow 5K - Denver

Jul 22, 2026 (Estimated)

Abominable Winter Adventure Run

Jan 28, 2027 (Estimated)

Conifer's Run the Ranch 5K

Jun 10, 2026 (Estimated)

Elevation Run

Jul 29, 2026 (Estimated)

Cortez Burst Triathlon

Jul 4, 2026 (Estimated)

Pueblo to Pueblo Run

Apr 29, 2026 (Estimated)

Creede Mountain Run

Sep 2, 2026 (Estimated)

4th of July Gothic Trail Run

Jul 4, 2026 (Estimated)

Camp 4 Coffee Cart to Cart Trail Run

Sep 23, 2026 (Estimated)

Cart to Cart Trail Run

Sep 23, 2026 (Estimated)

Crested Butte Ultra

Sep 9, 2026 (Estimated)

Grand Traverse Mountain Run

Sep 2, 2026 (Estimated)

Grin and Bear It Trail Run

Jul 15, 2026 (Estimated)

Park to Peak to Pint

Sep 9, 2026 (Estimated)

S'more Adventure Race

Sep 30, 2026 (Estimated)

5K Pajama Jog

Aug 19, 2026 (Estimated)

5K Run/Walk for Huntington's Disease

Sep 9, 2026 (Estimated)

AVS 5K

Oct 7, 2026 (Estimated) 1 reviews

Back2School 5K

Aug 12, 2026 (Estimated)

Bellco Colfax 5K

May 20, 2026 (Estimated)

Big Gay 5K Denver

Jun 17, 2026 (Estimated)

Boo-tiful Vista

Oct 29, 2026 (Estimated)

Boo-tiful Vista 5K Run and Walk

Oct 29, 2026 (Estimated)

bRUNch - Denver Telegraph

Apr 30, 2026 (Estimated)

bRUNch At Postino LoHi

May 7, 2026 (Estimated)

bRUNch Run - Denver

Oct 8, 2026 (Estimated)

BT5K Denver

May 6, 2026 (Estimated)

Bubble Run - Denver

Jul 8, 2026 (Estimated)

Bunny Bolt 5K/10K

Apr 15, 2026 (Estimated)

Chasing Unicorns 5K

Mar 19, 2027 (Estimated)

Cherry Creek Sneak

Apr 23, 2026 (Estimated) 1 reviews

Christmas Carol Classic 5K/10K

Dec 17, 2026 (Estimated)

CO Run/Walk to Fight Lymphedema & Lymphatic Diseases

Sep 10, 2026 (Estimated)

Colorado Courage 5K

Aug 26, 2026 (Estimated)

Colorado Rockies Home Run for the Homeless

Jun 4, 2026 (Estimated) 1 reviews

Corner Store Country Run - Denver

Jul 8, 2026 (Estimated)

Cupid's Undie Run - Denver

Feb 25, 2027 (Estimated)

D'Evelyn Dash

Aug 26, 2026 (Estimated)

Dash for Smiles 5K

Jul 30, 2026 (Estimated)

Denver 5K

Sep 9, 2026 (Estimated)

Denver bRUNch At Night With Snooze - Union Station

Jun 1, 2026 (Estimated)

Denver Challenge

Jun 17, 2026 (Estimated)

Denver Free to Breathe 5K

Oct 1, 2026 (Estimated)

Denver Pancakes and Beer bRUNch

Mar 19, 2027 (Estimated)

Denver Steuben's Truck at Great Divide Barrel Bar

Jul 23, 2026 (Estimated)

Denver Undy Run

Jun 24, 2026 (Estimated)

Denver Veterans Day Run

Nov 5, 2026 (Estimated)

Destination Health Walk, Run, Learn

Jul 22, 2026 (Estimated)

Dog Days of Summer

Aug 20, 2026 (Estimated)

Donor Dash - Denver

Jul 16, 2026 (Estimated)

El Grito 5K - Denver

Sep 10, 2026 (Estimated)

Father's Day 5K/10K - Denver

Jun 18, 2026 (Estimated)

Fight For Air Climb - Republic Plaza Stair Climb

Mar 5, 2027 (Estimated)

Fit for Fire 5K

Oct 9, 2026 (Estimated)

Furry Scurry - Denver

May 6, 2026 (Estimated) 1 reviews

GHC Run For Haiti 5K

Sep 17, 2026 (Estimated)

Graffiti Run - Denver

Apr 23, 2026 (Estimated)

Great Candy Run - Denver

Nov 12, 2026 (Estimated)

Harvesting Hope 5K

Nov 23, 2026 (Estimated)

Healthy Kids Running Series - Denver, CO

Oct 1, 2026 (Estimated)

Home for the Holidays 5K - Denver

Nov 5, 2026 (Estimated)

Hop, Skip & a Jump Start 5K

Sep 17, 2026 (Estimated)

Hope Happens Here Denver Brain Tumor 5K

Apr 1, 2027 (Estimated) 1 reviews

Hoppin' Half

Apr 15, 2026 (Estimated)

Hoppin' Half Marathon, 10K & 5K

Mar 25, 2027 (Estimated)

Hot Trot 5K - Denver

Jun 10, 2026 (Estimated)

IOCC Pan-Orthodox 5K

Aug 19, 2026 (Estimated)

Jingle Bell Run - Denver

Dec 10, 2026 (Estimated)

Jodi's Race for Awareness

Jun 10, 2026 (Estimated)

Just For J 5K - Denver

Jul 22, 2026 (Estimated)

Komen Colorado Race for the Cure

Sep 24, 2026 (Estimated)

Le Cours de L'Amour 5K/10K

Feb 11, 2027 (Estimated)

Lemon Climb - Denver

May 13, 2026 (Estimated)

Lucky Charm 5K/10K - Denver

Mar 11, 2027 (Estimated)

Machebeuf High School Buffalo Run

Sep 17, 2026 (Estimated)

Mile High United Way Turkey Trot

Nov 23, 2026 (Estimated)

Miles for Mentoring 5K

Sep 23, 2026 (Estimated)

Monster Dash Run Denver

Oct 28, 2026 (Estimated)

Montbello ALIVE 5K

Sep 23, 2026 (Estimated)

Mothers Day 5K - Denver

May 14, 2026 (Estimated)

Move Forward 5K/10K

Sep 16, 2026 (Estimated)

MuckFest MS Denver

Jul 15, 2026 (Estimated)

Northside Stride 5K

Jun 24, 2026 (Estimated)

Officers Down 5K - Denver

Nov 5, 2026 (Estimated)

PH in the Park

Aug 27, 2026 (Estimated)

Polar Bear 5K - Denver

Jan 22, 2027 (Estimated)

Purple Stride Denver

Jun 25, 2026 (Estimated)

Race for Research 5K

Aug 20, 2026 (Estimated)

Resolution 5K - Denver

Dec 31, 2026 (Estimated)

Resolve 5K/10K

Jan 7, 2027 (Estimated)

REVEL Rockies

Jun 4, 2026 (Estimated)

Rise Up 5k - Denver CO

Jul 1, 2026 (Estimated)

RMRR Trophy Series

Dec 3, 2026 (Estimated)

Rock 'n' Roll Denver Half Marathon, 10K & 5K

Oct 15, 2026 (Estimated) 2 reviews

Rocky Mountain Brew Runs at Denver Beer Co

May 27, 2026 (Estimated)

Rudolph Ramble 5K

Dec 3, 2026 (Estimated)

Run 4 Their Lives - North Denver

Oct 8, 2026 (Estimated)

Run for the Door 5K - Denver

Jun 3, 2026 (Estimated)

Run MS Denver

May 6, 2026 (Estimated)

Running Wild - Denver

Jun 17, 2026 (Estimated)

Sand Creek Half Marathon, 5K & 10K

Jul 8, 2026 (Estimated)

Scream Scram 5K

Oct 20, 2026 (Estimated)

Second Chance 5K - Denver

Apr 8, 2026 (Estimated)

Sleep Tight Colorado 8th Annual 5K Pajama Jog

Aug 18, 2026 (Estimated)

Special Olympics Colorado Polar Plunge Splash and 5K Dash

Feb 25, 2027 (Estimated)

Strides for Epilepsy 5K

Jun 11, 2026 (Estimated)

Super Run - Denver

Aug 26, 2026 (Estimated)

SuperBowl 5K

Feb 5, 2027 (Estimated)

Superhero Challenge 5K

Aug 27, 2026 (Estimated)

Superhero Heart Run - Denver

Oct 29, 2026 (Estimated)

The Color Run - Denver

Aug 26, 2026 (Estimated)

The Super Run 5K-Denver

Sep 17, 2026 (Estimated)

Ugly Sweater Run - Denver

Dec 16, 2026 (Estimated)

Valentine's Day 5K - Denver

Feb 12, 2027 (Estimated)

Vista 5K

Sep 25, 2026 (Estimated)

Cirque Series Trail Run

Jul 29, 2026 (Estimated)

Robin Hood's Dash-n-Dine in Sherwood Forest

Aug 6, 2026 (Estimated)

Canine on the Creek 5K

May 13, 2026 (Estimated)

Animas Mug Run

Oct 15, 2026 (Estimated)

Durango Double Trail Run Half Marathon & 5K

Oct 7, 2026 (Estimated)

Durango Nature Studies' Earth Day 5K

Apr 23, 2026 (Estimated)

Durango Parks & Recreation Triathlon

Aug 5, 2026 (Estimated)

Family 5K

Aug 19, 2026 (Estimated)

Girls on the Run 5K - Durango

Nov 4, 2026 (Estimated)

Jouney of Hope 5K

Oct 14, 2026 (Estimated)

Mountain Marmot

Sep 23, 2026 (Estimated)

Muck & Mire Mud Adventure Race

Aug 5, 2026 (Estimated)

Mutt 'n Strut

Jun 3, 2026 (Estimated)

Pueblo Feast Day 5K

Apr 1, 2027 (Estimated)

Southwest Series Marathon, Half Marathon, 10K & 5K - Day 2

Nov 6, 2026 (Estimated)

Southwest Sunset XC Classic

Sep 15, 2026 (Estimated)

Uncle Clyde's Run & Slide

Mar 4, 2027 (Estimated)

Banquet Beer Mile

Jun 4, 2026 (Estimated)

La Sportiva Boneyard Boogie Trail Run

May 20, 2026 (Estimated)

LG Tri Splash/Grind/Sprint

Jul 8, 2026 (Estimated)

Thanks4Giving Race

Nov 19, 2026 (Estimated)

Edgewater 5K

May 13, 2026 (Estimated)

Stumpy's Stampede 5K/10K Trail Run

Aug 6, 2026 (Estimated)

Colorado Cancer Foundation Run for the Cure

Aug 24, 2026 (Estimated)

Elizabeth 5K

Aug 13, 2026 (Estimated)

Run in The Pines

Oct 8, 2026 (Estimated)

Run Wild 5K Fund Run

Jun 10, 2026 (Estimated)

Devil on the Divide

Sep 9, 2026 (Estimated)

High Plains Elementary Fun Run

May 13, 2026 (Estimated)

Jeremy Bitner Fallen Officer 5K/10K Run

Jun 17, 2026 (Estimated)

Colorado Firecracker Run

Jul 4, 2026 (Estimated)

Eerie Erie

Oct 28, 2026 (Estimated)

Erie Half Marathon & 5K

Aug 27, 2026 (Estimated)

Pilgrimage Run

Nov 23, 2026 (Estimated)

Terrain Race Denver

Aug 26, 2026 (Estimated)

Dasher 5K

Dec 10, 2026 (Estimated)

Estes Park Marathon, Half Marathon, 10K & 5K

Jun 18, 2026 (Estimated)

Estes Trail Ascent

Oct 15, 2026 (Estimated)

Frost Giant 5K and 10K Races

Jan 29, 2027 (Estimated)

Running of the Bulls - Estes Park

Sep 16, 2026 (Estimated)

YMCA of the Rockies Turkey Trot 5K

Nov 24, 2026 (Estimated)

5K In My Shoes

Apr 23, 2026 (Estimated)

Elk Meadow Winter Trail Race

Feb 25, 2027 (Estimated)

EPRD Kid's Triathlon

Aug 20, 2026 (Estimated)

Evergreen Sprint Triathlon

Jul 23, 2026 (Estimated)

Evergreen Town Race

Aug 6, 2026 (Estimated) 1 reviews

Fall EverGold Trail Race

Oct 7, 2026 (Estimated)

Freedom Run 5K - Evergreen

Jul 4, 2026 (Estimated)

Glow in the Dark Family 5K

Oct 16, 2026 (Estimated)

Meyer Ranch Park Trail Race

Aug 5, 2026 (Estimated)

Mountain Goat Kids - Evergreen

Oct 1, 2026 (Estimated)

Firecracker 5K - Firestone

Jul 4, 2026 (Estimated)

Run Barefoot 5K

Sep 16, 2026 (Estimated)

Spartan Sprint - Colorado

May 14, 2026 (Estimated)

Spartan Super - Colorado

May 13, 2026 (Estimated)

Warrior Dog Dash 5K

Mar 11, 2027 (Estimated)

3Hopeful Hearts Remembrance Run

Sep 10, 2026 (Estimated)

Bacon Strip Races

Oct 7, 2026 (Estimated)

Cinco Cinco 5K

May 6, 2026 (Estimated)

Color Vibe 5K - Ft. Collins

Apr 15, 2026 (Estimated)

Colorado Marathon, Half Marathon, 5K & 10K

May 7, 2026 (Estimated)

CSU Homecoming 5K

Oct 14, 2026 (Estimated)

Fast and the Furriest 5K - Fort Collins

Apr 29, 2026 (Estimated) 1 reviews

Father's Day 5K - Fort Collins

Jun 18, 2026 (Estimated)

Fort Collins Human Race Half Marathon, 10K & 5K

Jul 29, 2026 (Estimated)

Jammin' Ram Run 5K Prediction Race

Nov 4, 2026 (Estimated)

Jingle Bell Run - Northern Colorado

Dec 3, 2026 (Estimated)

KRFC Resolution Run

Dec 31, 2026 (Estimated)

Malt Monster 5K

Oct 29, 2026 (Estimated)

Mountain Avenue Mile

Aug 8, 2026 (Estimated)

Pi Day Pi K - Fort Collins

Mar 11, 2027 (Estimated)

Polar Bear Run and Plunge

Jan 21, 2027 (Estimated)

PSD MATh Dash 5K

Mar 25, 2027 (Estimated)

Quad Rock 50

May 13, 2026 (Estimated)

Run for Hope 5K - Fort Collins

Aug 12, 2026 (Estimated)

Run Fur Fun 5K - Fort Collins

Mar 4, 2027 (Estimated)

Sharin' O' the Green 5K

Mar 11, 2027 (Estimated)

Sombrero Run 5K

Jun 10, 2026 (Estimated)

Swift Sprint

Apr 28, 2026 (Estimated)

Vanilla Day 5K

Sep 23, 2026 (Estimated)

Wild West Relay

Aug 4, 2026 (Estimated)

Faith 5K

Apr 15, 2026 (Estimated)

Chick-fil-A Family 5K

Jun 17, 2026 (Estimated)

Jingle Bell 5K - Fountain

Dec 9, 2026 (Estimated)

No Child Wet Behind - Fountain

May 21, 2026 (Estimated)

Start It Off 5K Color Run

Sep 2, 2026 (Estimated)

Dam Run at Castlewood Canyon

Sep 17, 2026 (Estimated)

Frisco Girls on the Run 5K

Nov 12, 2026 (Estimated)

Frisco Triathlon

Jul 15, 2026 (Estimated)

Mountain Goat Kids Trail Running Race 1

Jun 27, 2026 (Estimated)

Turkey Day 5K - Frisco

Nov 24, 2026 (Estimated)

Girl's on the Run 5K - Fruita

May 6, 2026 (Estimated)

Mike the Headless Chicken 5K

Jun 3, 2026 (Estimated) 1 reviews

Rumble at 18 Road

Apr 22, 2026 (Estimated)

Sweet Heart 5K/10K

Feb 18, 2027 (Estimated)

Strawberry Shortcut 5K, 10K

Jun 18, 2026 (Estimated) 1 reviews

Walk MS & 5K Run - Glenwood Springs

May 20, 2026 (Estimated)

YouthZone Ascent - Taking Kids To The Top

Oct 8, 2026 (Estimated)

All-Out Kooky-Spooky Half Marathon, 10K & 5K

Oct 29, 2026 (Estimated) 1 reviews

All-Out Spring Fever Half Marathon, 10K, 5K & 1-Mile

Mar 19, 2027 (Estimated)

Coyote Classic

Oct 1, 2026 (Estimated)

Fairmount Firebird Chase 5K

May 7, 2026 (Estimated)

Golden Gallop 5K/10K

Sep 24, 2026 (Estimated)

Grizzly Growl 5K

Oct 1, 2026 (Estimated)

Mine Shaft Half

May 20, 2026 (Estimated)

Mountain Goat Kids - Golden

Sep 10, 2026 (Estimated)

Rocky Mountain Brew runs at New Terrain Brewing

Oct 15, 2026 (Estimated)

Tommyknocker Ultras

May 20, 2026 (Estimated)

Xterra Trail Run Golden Gate Canyon

Sep 24, 2026 (Estimated)

Granby Gut Buster 5K

Jul 29, 2026 (Estimated)

Snow Mountain Ranch Half Marathon, 10K & 5K

Sep 23, 2026 (Estimated)

CASA Superhero 5K - Grand Junction

Sep 17, 2026 (Estimated)

Children With Hope 5K/10K

Jun 17, 2026 (Estimated)

Gauntlet - Grand Junction

May 13, 2026 (Estimated)

Grand Mesa Ultras

Jul 29, 2026 (Estimated)

Larchwood Inns Memory 5K

Jun 24, 2026 (Estimated)

Mesa County Sheriff's Office Torch Run

May 19, 2026 (Estimated)

Monument Downhill 5K

Jul 30, 2026 (Estimated)

OMMS 5K

Sep 16, 2026 (Estimated)

Panda Waddle 5K

Nov 11, 2026 (Estimated)

Santa Cause Run

Dec 17, 2026 (Estimated)

Spirit of the Valley 5K

Sep 9, 2026 (Estimated)

Trick, Track, and Treat

Oct 27, 2026 (Estimated)

5K Angel Flight Run/Walk

Jul 1, 2026 (Estimated)

5K for a Cure - Greeley

Jun 3, 2026 (Estimated)

Aims Community College Aardvark Fun Run

Apr 29, 2026 (Estimated)

Fiesta 5K - Greeley

May 6, 2026 (Estimated)

Frontier Academy Community 5K

Aug 19, 2026 (Estimated)

Greeley Center for Independence 5K

May 20, 2026 (Estimated)

Kids for Kyla Legacy Run

Sep 5, 2026 (Estimated)

Live United Color Run

Oct 28, 2026 (Estimated)

NCMC Turkey Trot

Nov 23, 2026 (Estimated)

Race for Recovery - Greeley

Jun 10, 2026 (Estimated)

Richard's Race 5K

Jul 15, 2026 (Estimated)

Run 4 Greeley

Jul 4, 2026 (Estimated)

Run for Refugees - Greeley

May 13, 2026 (Estimated)

Superhero Run - Greeley

Sep 9, 2026 (Estimated)

Getaway 10K & 5K - Denver

Sep 10, 2026 (Estimated)

Race to Cure Sarcoma Denver

Sep 16, 2026 (Estimated)

That Dam 13.1 & 5K Crush That Dam

Mar 5, 2027 (Estimated)

Sage Burner Trail Run

Oct 28, 2026 (Estimated)

Hayden Cog Run

May 6, 2026 (Estimated)

ThunderSplash Dash

Apr 22, 2026 (Estimated)

Kennebec Mountain Run

Jul 29, 2026 (Estimated)

BackCountry Run Wild 5K

May 7, 2026 (Estimated)

Blast Off 5K

Aug 20, 2026 (Estimated)

Fall Six Pack Series - Highlands Ranch 1M/5K

Aug 6, 2026 (Estimated)

Grizzly 5000

Aug 26, 2026 (Estimated)

HRCA July 4th Independence Day 5K

Jul 4, 2026 (Estimated)

HRCA Mother's Day 5K

May 12, 2026 (Estimated)

HRCA Oktoberfest 5K

Sep 23, 2026 (Estimated)

HRCA Splash Mash Dash Kids Triathlon

Aug 5, 2026 (Estimated)

HRCA St. Patrick's Day 5K

Mar 11, 2027 (Estimated)

Run For Your Life Family 5K

May 27, 2026 (Estimated)

Winter Six Pack Series - Highlands Ranch 1M/5K

Jan 8, 2027 (Estimated)

Flaming Foliage Relay

Sep 8, 2026 (Estimated)

Indian Hills 5K Fun Run

Jul 4, 2026 (Estimated)

James Teter Memorial 5K

Sep 23, 2026 (Estimated)

Into The Wild Running Festival

Jun 3, 2026 (Estimated)

Discrete Peak Series - A-Basin

Jul 29, 2026 (Estimated)

La Veta Oktoberfest 5K

Oct 7, 2026 (Estimated)

Waneka Classic 5K

Sep 7, 2026 (Estimated)

5K For 5K

May 21, 2026 (Estimated)

All-Out Mardi Crawl Half Marathon, 10K, 5K & 1 Mile

Feb 11, 2027 (Estimated)

Federal Cup 5K

May 20, 2026 (Estimated)

Mountain Goat Kids - Lakewood

Jul 16, 2026 (Estimated)

Rock'n Run 5K

Jun 17, 2026 (Estimated)

Rocky Mountain Lab Rescue 5K

Sep 16, 2026 (Estimated)

Rugged Maniac Obstacle Race - Denver

Aug 12, 2026 (Estimated)

Tiger Prowl 5K - Lakewood

Sep 10, 2026 (Estimated)

Lincoln Mountain Trail Run

Jun 18, 2026 (Estimated)

Colorado Cup Snowshoe Race

Jan 28, 2027 (Estimated)

Fish Hatchery 5K

Jun 4, 2026 (Estimated)

Haunted Hills Costume Run

Oct 29, 2026 (Estimated)

Leadville Firecracker 5K

Jul 4, 2026 (Estimated)

Airlife Memorial 5K/10K

May 13, 2026 (Estimated)

Bekah's Watermelon Run Walk Roll

Sep 30, 2026 (Estimated)

Chatfield Ultra Racing Events C.U.R.E.

Apr 29, 2026 (Estimated)

Clement Park Gobble Wobble

Nov 23, 2026 (Estimated)

Comeback Trail 5K - Littleton

May 21, 2026 (Estimated)

Denver Wicked Wine Run

Aug 26, 2026 (Estimated)

Firecracker 5K - Littleton

Jul 1, 2026 (Estimated)

Gluten Free Gallop 5K

Jun 4, 2026 (Estimated)

Great Pumpkin Haul

Oct 28, 2026 (Estimated)

HAE-In-Motion 5K - Littleton

Oct 22, 2026 (Estimated)

Hogback Hustle

Apr 30, 2026 (Estimated)

Justice Run

Oct 1, 2026 (Estimated)

Kick-Ick 5K

Aug 21, 2026 (Estimated)

Miles For Our Military

Jun 17, 2026 (Estimated)

Oy Vey 5K - Littleton

Oct 8, 2026 (Estimated)

Pancake Stampede 5K

Aug 13, 2026 (Estimated)

Platte 5 & 10 Series

Sep 3, 2026 (Estimated)

Platte River Half

Apr 9, 2026 (Estimated)

Race Against Pain Cluster Headache Awareness

Jun 17, 2026 (Estimated)

Rockin' On the River 5K

Apr 7, 2026 (Estimated)

Rocky Mountain Brew Runs at St. Patrick's Brewing

Mar 11, 2027 (Estimated)

Rox Trot

May 6, 2026 (Estimated)

Run For Remembrance

May 7, 2026 (Estimated)

Second Wind Walk/Run

Oct 7, 2026 (Estimated)

Super Sunday 5K

Feb 5, 2027 (Estimated)

The Joshua School 5K

Sep 11, 2026 (Estimated)

The Stride

Oct 29, 2026 (Estimated)

Vampire 5K

Sep 30, 2026 (Estimated)

Kokopelli Classic Trail Runs

Aug 26, 2026 (Estimated)

Call Your Bluff Poker Run

Oct 1, 2026 (Estimated)

Neighborhood Fun Run - Lone Tree

Nov 12, 2026 (Estimated)

South Suburban Youth & Adult TRYathlon

Jul 29, 2026 (Estimated)

American Heroes Run

Sep 9, 2026 (Estimated)

Heart Throb 5K - Longmont

Feb 11, 2027 (Estimated)

Leftover Turkey Trot - Longmont

Nov 25, 2026 (Estimated)

Longmont CollaBEERation 5K

Apr 8, 2026 (Estimated)

Longmont Half Marathon & 5K

Jul 4, 2026 (Estimated)

Longmont Sunrise Stampede

Aug 12, 2026 (Estimated)

Longmont Trail Half Marathon, 10K & 5K

Jul 23, 2026 (Estimated)

Oktoberfest Sprint Triathlon

Sep 24, 2026 (Estimated)

Outdoor Divas Sprint Triathlon

Jul 30, 2026 (Estimated)

Paws in the Park - Longmont

Oct 7, 2026 (Estimated)

Race Against Domestic Violence

Oct 7, 2026 (Estimated)

Silver Creek Raptor Run

Apr 29, 2026 (Estimated)

Skyline Falcon 5K

Sep 30, 2026 (Estimated)

Skyline Track 5K

Mar 4, 2027 (Estimated)

Sole Mates 5K

Nov 4, 2026 (Estimated)

Summer OPEN Sprint Triathlon

May 20, 2026 (Estimated)

Try-a-Tri - Longmont

Jun 3, 2026 (Estimated)

Let Freedom Run - Louisville

Jul 4, 2026 (Estimated)

Louisville Trail Half Marathon, 10K & 5K

Oct 8, 2026 (Estimated)

Lucky Louisville 5K

Mar 18, 2027 (Estimated)

Monster Dash Run Louisville

Oct 29, 2026 (Estimated)

Skirt Sports 13er Half Marathon & 5K

Jun 4, 2026 (Estimated)

Taste of Louisville 5K

Jun 3, 2026 (Estimated)

Fido 5K

Aug 26, 2026 (Estimated)

Fire Hydrant 5

Jun 3, 2026 (Estimated)

Loveland Lake to Lake Triathlon

Jun 24, 2026 (Estimated) 1 reviews

Loveland Liberty 5K

Jul 4, 2026 (Estimated)

Loveland Sweetheart Classic

Feb 11, 2027 (Estimated)

Loveland Turkey Trot

Nov 23, 2026 (Estimated)

Phantom 5K - Loveland

Oct 28, 2026 (Estimated)

Running with the Regiment

May 13, 2026 (Estimated)

Sierra's Race Against Meningitis

Jun 15, 2026 (Estimated)

Valley 5000 Run

Aug 18, 2026 (Estimated)

La Sportiva Trail Run Relay featuring the Beer Relay

Jun 3, 2026 (Estimated)

Old Man Winter Rally

Feb 12, 2027 (Estimated)

Manassa Pioneer Days 5K

Jul 22, 2026 (Estimated) 1 reviews

Mancos Cowboy Half Marathon, 5K & Fun Run

Jun 24, 2026 (Estimated)

Barr Trail Mountain Race

Jul 16, 2026 (Estimated)

Lead King Loop 25K & Quarry Climb 12.5K

Sep 17, 2026 (Estimated)

Park to Art Run Races

Jun 3, 2026 (Estimated)

Run for Your Life 5K - Meeker

Jul 4, 2026 (Estimated)

Rambling Rose 5K

Aug 12, 2026 (Estimated)

Minturn Monster Dash 3M and Tombstone 10M Run

Oct 30, 2026 (Estimated)

Run To The Ascent - 5K For Schools

Jun 17, 2026 (Estimated)

Stop, Drop, Run, 5K Monument Trail Race

Sep 17, 2026 (Estimated)

Beware the Bear Trail Races

Oct 22, 2026 (Estimated)

Esprit de She Red Rocks 5K/10K

Oct 22, 2026 (Estimated)

NedNed Race Half Marathon, 10K & 5K

Sep 9, 2026 (Estimated)

Great Escape A Refugee's Race For Freedom

Jun 25, 2026 (Estimated)

Firecrackers and Flapjacks Run

Jul 4, 2026 (Estimated)

Green and Gold 5K

Sep 30, 2026 (Estimated)

Northglenn Cross Country Classic 5K

Oct 8, 2026 (Estimated)

South Routt 5K

Sep 9, 2026 (Estimated)

Ouray Mountain Trail Run

Sep 30, 2026 (Estimated)

Devil Mountain Ultra Trail Race

Sep 9, 2026 (Estimated)

Mountain Chile Cha Cha

Sep 30, 2026 (Estimated)

Pagosa Duathlon Do-the-Du

Jul 8, 2026 (Estimated)

Turkey Track Trail Run

Jun 3, 2026 (Estimated)

24 Hours of Palmer Lake Fun Run

Apr 15, 2026 (Estimated)

4th of July Fun Run - Palmer Lake

Jul 4, 2026 (Estimated)

Creepy Crawl 5K - Palmer Lake

Oct 28, 2026 (Estimated)

Genesis Adventure Race

Apr 15, 2026 (Estimated)

Cattle Crossing 5K

Jun 3, 2026 (Estimated)

Commitment Day 5K - Parker

Jan 1, 2027 (Estimated)

Divinity Dash

Sep 9, 2026 (Estimated)

Kids' TRY-athlon

Jul 22, 2026 (Estimated)

Lifetime Indoor Triathlon - Parker, CO

Jan 8, 2027 (Estimated)

Love 'em Or Leave 'em Valentine's Day 5K/10K

Feb 11, 2027 (Estimated)

Parker 4th of July 5K

Jul 4, 2026 (Estimated)

Parker Family 5K

May 21, 2026 (Estimated)

Turkey Day 5K - Parker

Nov 23, 2026 (Estimated)

Town of Peetz Colorful Fun Run

May 20, 2026 (Estimated)

Huskies Play 60 5K

Sep 2, 2026 (Estimated)

Elk Creek Trail Race

Sep 13, 2026 (Estimated)

Atalanta 5K

Aug 5, 2026 (Estimated)

BIGDOGBRAG Pueblo Mud Run

Jun 24, 2026 (Estimated)

Chieftain Spring Runoff

Mar 5, 2027 (Estimated)

Colorado State Fair Stampede 5k

Sep 1, 2026 (Estimated)

Colorado's State Fair 5K

Sep 2, 2026 (Estimated)

Crime Stoppers S.W.A.T.T.

Sep 30, 2026 (Estimated)

Hero Run/Walk

Oct 15, 2026 (Estimated)

Lions Roar for Fitness 5K/2.5K Challenge

Oct 7, 2026 (Estimated)

Ordinary Mortals Triathlon

May 13, 2026 (Estimated)

Spank Blasing Run

Apr 22, 2026 (Estimated)

Valentine Twosome Relay

Feb 12, 2027 (Estimated)

Vineland Middle School My School Color Run

May 20, 2026 (Estimated)

YMCA of Pueblo Turkey Trot

Nov 24, 2026 (Estimated)

Baylon Michael Meyer 5K/10K Memorial Run/Walk

Apr 1, 2027 (Estimated)

Mosaic 5K Run

Jun 3, 2026 (Estimated)

Color Run Rangely

Jul 1, 2026 (Estimated)

La Sportiva Half Marathon, 5K & 10K

Jul 22, 2026 (Estimated)

Log Hill Hustle

Sep 16, 2026 (Estimated) 1 reviews

Law Enforcement 5K Torch Run

May 20, 2026 (Estimated)

Rifle Turkey Trot

Nov 24, 2026 (Estimated)

A Run Through Time - Salida

Mar 18, 2027 (Estimated)

FIBArk 5K and 10K Road Races

Jun 17, 2026 (Estimated)

FIBArk Hill Climb

Jun 15, 2026 (Estimated)

High Lonesome 100

Jul 28, 2026 (Estimated)

Salida Rec New Year's Day 5K

Jan 1, 2027 (Estimated)

Indian Creek Fifties

Oct 21, 2026 (Estimated)

Titan Trot

May 13, 2026 (Estimated)

Rocky Mountain Triathlon

Jul 30, 2026 (Estimated)

Hardrock 100

Jul 21, 2026 (Estimated)

Kendall Mountain Run

Jul 22, 2026 (Estimated)

Silverton Challenge - Day 1

Aug 11, 2026 (Estimated)

Silverton Double Dirty 30

Sep 23, 2026 (Estimated)

Ragnar Trail Relay - Snowmass

Jun 9, 2026 (Estimated)

Tough Mudder - Colorado

Jul 15, 2026 (Estimated)

10,000 Meters at 10,000 Feet Trail Run

Sep 3, 2026 (Estimated)

Emerald Mountain Trail Run

Sep 23, 2026 (Estimated)

Girls on the Run 5K - Steamboat Springs

Nov 4, 2026 (Estimated)

Ski Haus Continental Divide Trail Run

Aug 26, 2026 (Estimated)

Spirit Challenge

May 20, 2026 (Estimated)

Spring Creek Memorial Trail Run

Jul 29, 2026 (Estimated)

Steamboat Sneak

Oct 15, 2026 (Estimated)

Steamboat Triathlons

Aug 13, 2026 (Estimated)

Tri the Boat

Jun 24, 2026 (Estimated)

Turkey Trot - Steamboat Springs

Nov 24, 2026 (Estimated)

High Plains Turkey Trot

Nov 24, 2026 (Estimated)

Tri on the Plains

Jun 25, 2026 (Estimated) 1 reviews

Stoneham Stoneham

May 29, 2026 (Estimated)

Leprechaun 5K

Mar 12, 2027 (Estimated)

Superior Mile

Jul 4, 2026 (Estimated)

Superior Stocking Run

Dec 17, 2026 (Estimated)

Blisters & Brews 5K

Sep 16, 2026 (Estimated)

Rundola Telluride's Fourth of July Race

Jul 4, 2026 (Estimated)

Bubble Boogie 5K

Jun 3, 2026 (Estimated)

Cottonwood Classic 5K

May 20, 2026 (Estimated)

Dart for the Arts 5K

Sep 16, 2026 (Estimated)

Freaky Fun 5K

Oct 22, 2026 (Estimated)

Hawk Hustle 5K

Oct 2, 2026 (Estimated)

Precious Miles 5K Run/Walk

Aug 16, 2026 (Estimated)

Rocky Top Middle School 5K

Apr 29, 2026 (Estimated)

Westgate Run Wild

Sep 9, 2026 (Estimated)

WinterFest 5K - Thornton

Dec 10, 2026 (Estimated)

Scarecrow 5K Fun Run-

Oct 7, 2026 (Estimated)

A Run Through Time - Trinidad

Sep 16, 2026 (Estimated)

Bulldog Run - Trinidad

Nov 19, 2026 (Estimated)

Apres 5K

Jun 9, 2026 (Estimated)

Krueger Family Shamrock Shuffle Snowshoe Race

Mar 18, 2027 (Estimated)

La Sportiva HillClimb

Jul 8, 2026 (Estimated)

Mountain Games - Pepi's Face-Off

Jun 11, 2026 (Estimated)

Run the Byway...Vindicator-Independce Twilight 5K

Sep 9, 2026 (Estimated)

Wellington Witchy 5K

Oct 29, 2026 (Estimated)

Hardscrabble Mountain Trail Run

Jun 3, 2026 (Estimated)

All-Out Dog Days Half Marathon, 10K, 5K & 1-Mile

Jul 22, 2026 (Estimated)

Bobcat Boogie 5K - Westminster

Apr 8, 2026 (Estimated)

Colorado Women's Classic - Westminster

May 14, 2026 (Estimated)

Commitment Day 5K - Westminster, CO

Jan 1, 2027 (Estimated)

Denver Gorilla Run

Oct 21, 2026 (Estimated)

Esprit de She Westminster

Sep 9, 2026 (Estimated)

Eye Love Logan RDH12 5K

Aug 20, 2026 (Estimated)

Fit Foodie 5K/10K - Denver

Jul 29, 2026 (Estimated)

Global Hope Apple Cider 5K/10K

Oct 14, 2026 (Estimated)

Holy Cow Trail Stampede

Aug 12, 2026 (Estimated)

Jag Jog 5K

Sep 30, 2026 (Estimated)

K9 Canter

Oct 8, 2026 (Estimated)

Lifetime Indoor Triathlon - Westminster, CO

Jan 8, 2027 (Estimated)

Miles for Smiles 5K - Westminster

May 21, 2026 (Estimated)

Neighborhood Fun Run Westminster Road Runner

Jun 24, 2026 (Estimated)

Prairie Dog Half Marathon & 5K

Sep 16, 2026 (Estimated)

Prediction Run Westminster

Mar 4, 2027 (Estimated)

Puma Prowl

May 6, 2026 (Estimated)

Ryan Hawk Hustle

Sep 24, 2026 (Estimated)

Six Pack Winter-Spring Series

Mar 4, 2027 (Estimated)

Spooknology for Technology

Oct 22, 2026 (Estimated)

Westy Half

Oct 29, 2026 (Estimated)

Farmers 5000

Sep 17, 2026 (Estimated)

Heroes of Hope Race

Jun 4, 2026 (Estimated)

Prospect Valley Elementary Gold Rush

Oct 8, 2026 (Estimated)

Sts. Peter & Paul Cool Duo 5K

Oct 7, 2026 (Estimated)

Wiggins 4th of July Freedom 5K

Jul 4, 2026 (Estimated)

Daysping Dash 5K

Sep 9, 2026 (Estimated)

Pelican Fest Triathlon

May 28, 2026 (Estimated)

Run For Orphans 5K

Nov 4, 2026 (Estimated)

Habitat Hobble - 5K/10K

Jun 24, 2026 (Estimated)

Rendezvous Run for Independence

Jul 1, 2026 (Estimated)

Winter Park Half Marathon & 5K

Aug 5, 2026 (Estimated)

XTERRA Winter Park

Aug 6, 2026 (Estimated)

Pony Express Run

Sep 17, 2026 (Estimated)

Woodland Park Mayors Cup

Aug 12, 2026 (Estimated)

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