Find Your Next 5K Colorado Race
Each 5K Colorado race has links to its marketing page and registration page.
View all races in ColoradoASU Race Against Suicide
Sep 16, 2026 (Estimated)
ASU Race for Mental Health Awareness
Sep 16, 2026 (Estimated)
Run passed Leukemia
Jun 29, 2027 (Estimated)
Hope House 5K
Apr 5, 2027 (Estimated)
Jace's Kickin' Kawasaki 5K - Arvada, CO
Aug 27, 2026 (Estimated)
Lincoln Academy Tech Trek
May 5, 2027 (Estimated)
Lincoln Academy Tech Trek 5k
May 5, 2027 (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, 2027 (Estimated)
2025 Always Hope Easter Run 5K/10K/13.1 DENVER/AURORA
Apr 19, 2027 (Estimated)
2025 Cinco De Mayo Run Against All Odds DENVER/AURORA
May 3, 2027 (Estimated)
2025 Father's Day Fun Run 5K/10K/13.1 DENVER/AURORA
Jun 14, 2027 (Estimated)
2025 July 4th Freedom Run 5K/10K/13.1 DENVER/AURORA
Jul 5, 2027 (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
Apr 4, 2027 (Estimated)
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
May 2, 2027 (Estimated)
Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA
Jan 18, 2027 (Estimated)
Coffee Lovers Run HOUSTON
Apr 25, 2027 (Estimated)
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
Jul 4, 2027 (Estimated)
Lunar New Year Run DENVER/AURORA
Feb 7, 2027 (Estimated)
Memorial Day Run DENVER/AURORA
May 23, 2027 (Estimated)
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
Jun 6, 2027 (Estimated)
Run for Coffee Lovers DENVER/AURORA
Jul 25, 2027 (Estimated)
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
Jun 20, 2027 (Estimated)
Sloth Run DENVER/AURORA
Saturday Aug 29, 2026
Sloth Runners Club Virtual Run DENVER
May 4, 2027 (Estimated)
Sloth Runners Club Virtual Run DENVER 0511
May 11, 2027 (Estimated)
Sloth Runners Club Virtual Run PHOENIX
May 11, 2027 (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, 2027 (Estimated)
Berthoud Spartans 5k
Jun 3, 2027 (Estimated)
7 reviews
Crested Crane Dash
May 2, 2027 (Estimated)
Engineers Without Borders Paraguay 5K
Apr 22, 2027 (Estimated)
Mountain 5K
Aug 10, 2026 (Estimated)
Summit Trail Running Series 1
Jun 1, 2027 (Estimated)
Summit Trail Running Series 2
Jun 15, 2027 (Estimated)
Summit Trail Running Series 3
Jul 6, 2027 (Estimated)
Summit Trail Running Series 4
Jul 20, 2027 (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, 2027 (Estimated)
Victims Rights Awareness 5k walk/run
Jun 6, 2027 (Estimated)
Mad Dash for School Cash
May 1, 2027 (Estimated)
Stop Drop and Run FUN RUN
Apr 3, 2027 (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, 2027 (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, 2027 (Estimated)
National Police Week 5k Run/Ruck/Walk
May 14, 2027 (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, 2027 (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)
Freedom Run Colorado
Oct 26, 2026 (Estimated)
Delta Correctional Center 5K Walk/Run to Wellness
May 6, 2027 (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, 2027 (Estimated)
Pumpkin Pie 5K/10K
Nov 17, 2026 (Estimated)
The Logan School Finish Line
May 31, 2027 (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)
EK5K Walk/Run
Jun 29, 2027 (Estimated)
4th Annual 5K In My Shoes
Apr 23, 2027 (Estimated)
Carbon Valley Half Marathon & 5K
May 9, 2027 (Estimated)
23 reviews
Carbon Valley Past Participant List
Feb 11, 2027 (Estimated)
RACE SIGN MAP
Jun 15, 2027 (Estimated)
Victims Empowerment Color Run
Jun 11, 2027 (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, 2027 (Estimated)
5 reviews
Arbor Day 5K
Apr 25, 2027 (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, 2027 (Estimated)
1 reviews
Father's Day Onsite Reg
Jun 16, 2027 (Estimated)
FireKracker 5K
Jul 2, 2027 (Estimated)
4 reviews
Flying Pig 5K
Apr 5, 2027 (Estimated)
Fort Collins Father's Day 5k
Jun 18, 2027 (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, 2027 (Estimated)
July 20 - 5k
Jul 20, 2027 (Estimated)
July 27 - 5k
Jul 27, 2026 (Estimated)
July 6 - 5k
Jul 6, 2027 (Estimated)
June 15 - 5k Run
Jun 15, 2027 (Estimated)
June 22 - 5k
Jun 22, 2027 (Estimated)
June 29 - 5k
Jun 29, 2027 (Estimated)
June 29 - Horsetooth Tri Training
Jun 29, 2027 (Estimated)
June 8 - Horsetooth Tri Training
Jun 8, 2027 (Estimated)
Kappa Delta's Halloween Hustle 5K
Oct 28, 2026 (Estimated)
Liberty to Liberty 5k
Sep 16, 2026 (Estimated)
Liberty-2-Liberty Run & Ride
Saturday Nov 7, 2026
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, 2027 (Estimated)
Halloween Hustle for Charity
Sunday Oct 18, 2026
Halloween Hustle for Charity 5k 2023
Oct 28, 2026 (Estimated)
RFWTT-VIRTUAL2020
Jul 11, 2027 (Estimated)
233 Veterans 5k Fun Run
Nov 14, 2026 (Estimated)
Bear Blitz 5K
Apr 15, 2027 (Estimated)
Superhero 5K
Sep 8, 2026 (Estimated)
1 reviews
Too Hot to Trot 5K
Jun 15, 2027 (Estimated)
Camp Out for Kids Get Yo Run On
Aug 28, 2026 (Estimated)
2016 Holly Wog
Jun 11, 2027 (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, 2027 (Estimated)
Leadville Ski Joring
Mar 4, 2027 (Estimated)
Kick Cancers Butt
Aug 21, 2026 (Estimated)
Mustang Mosey
Sep 28, 2026 (Estimated)
POTS In Pants & Crafts - 5k
Apr 15, 2027 (Estimated)
Respect Life 5K
Jul 18, 2027 (Estimated)
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, 2027 (Estimated)
The Spirit of the Rose
May 23, 2027 (Estimated)
West Side Best Side Cross Country Race - Fehringer Ranch
Apr 8, 2027 (Estimated)
Run for Jonny's 19th Birthday
Apr 14, 2027 (Estimated)
Annual Longmont Triathlon
Jun 3, 2027 (Estimated)
Longmont Kids Only Triathlon
Aug 16, 2026 (Estimated)
Longmont Kids' Only Triathlon, 13th Annual
Jun 3, 2027 (Estimated)
Longmont Triathlon
Aug 22, 2026 (Estimated)
Roger's River Run
Jul 10, 2027 (Estimated)
Roger's River Run 5K
Jul 12, 2027 (Estimated)
Brakes on Breast Cancer 5K and Car Show
Oct 22, 2026 (Estimated)
Earth Day Race
Apr 25, 2027 (Estimated)
2 reviews
Loveland Classic Expo & Race Day
Apr 20, 2027 (Estimated)
Military Appreciation Run
May 18, 2027 (Estimated)
New Vision 5K
May 6, 2027 (Estimated)
Run the Ranch 5K, 10K - Friday
Apr 15, 2027 (Estimated)
Superhero 5k Walk/Run
May 19, 2027 (Estimated)
MeadowGold
Sep 14, 2026 (Estimated)
PYRO'S MEDARIS MADNESS 5K
Sep 9, 2026 (Estimated)
Run Out MS Mothers Day 5k
May 12, 2027 (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, 2027 (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, 2027 (Estimated)
Run to the Rescue
Apr 22, 2027 (Estimated)
So Long To Summer
Aug 13, 2026 (Estimated)
Miller Farms Summer Solstice 5k
Jun 21, 2027 (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, 2027 (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, 2027 (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
Apr 18, 2027 (Estimated)
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, 2027 (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, 2027 (Estimated)
1 reviews
10k at 10,000 feet
Aug 24, 2026 (Estimated)
Make Your Dad Sweat Annual Fun Run and Dog Jog
Jun 19, 2027 (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, 2027 (Estimated)
Kickin' Kawasaki 5K - Windsor, CO
Oct 12, 2026 (Estimated)
Owen Martin Memorial 5K
Jul 9, 2027 (Estimated)
Paws and Sneakers 5K
Jun 15, 2027 (Estimated)
2 reviews
Tyler3Miler
Apr 28, 2027 (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, 2027 (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, 2027 (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, 2027 (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, 2027 (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, 2027 (Estimated)
Gift of Life and Breath 5K
May 20, 2027 (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, 2027 (Estimated)
Dunk-n-Dash
Aug 14, 2026 (Estimated)
XTERRA Beaver Creek Trail Runs
Jul 16, 2027 (Estimated)
XTERRA Mountain Championship & Beaver Creek Sprint
Jul 15, 2027 (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, 2027 (Estimated)
Black Squirrel Half
Sep 9, 2026 (Estimated)
XTERRA Lory Triathlon
Jun 17, 2027 (Estimated)
Fall Family Fun Run
Sep 10, 2026 (Estimated)
Kindness 5K
Mar 25, 2027 (Estimated)
Run for Habitat 5K
Jun 3, 2027 (Estimated)
Beulah Challenge Half Marathon, 10K & 5K
Oct 7, 2026 (Estimated)
Dirty 30 Trail Run
Jun 3, 2027 (Estimated)
5430 Triathlon
Sep 17, 2026 (Estimated)
Big Gay 5K Boulder
Sep 10, 2026 (Estimated)
Boulder Peak Triathlon
Jul 9, 2027 (Estimated)
Boulder Rez Half Marathon, 10K & 5K
Jun 4, 2027 (Estimated)
Boulder Stroke & Stride Series 1 w/5K Run Option
Jun 1, 2027 (Estimated)
Boulder Sunrise
Jun 25, 2027 (Estimated)
Boulder Sunset
Aug 26, 2026 (Estimated)
Buffalo Run - Boulder
Sep 10, 2026 (Estimated)
ColderBOLDER
Dec 2, 2026 (Estimated)
Colorado Triathlon
Jun 3, 2027 (Estimated)
Dash & Dine 5K Series 1
Apr 11, 2027 (Estimated)
Earn Your Independence 5K
Jul 4, 2027 (Estimated)
EMERGE 5K Helping our Youth Soar
May 6, 2027 (Estimated)
Fit for Christmas 5K
Dec 17, 2026 (Estimated)
Hometown Festival 5K
Sep 4, 2026 (Estimated)
Ironkids Boulder
Jun 10, 2027 (Estimated)
Ironman 70.3 Boulder
Aug 5, 2026 (Estimated)
Ironman Boulder
Jun 11, 2027 (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, 2027 (Estimated)
Race For Water
Apr 22, 2027 (Estimated)
Rocky Mountain Brew Runs at Boulder Beer Co
Jun 24, 2027 (Estimated)
Run To The Vote 5K
Nov 6, 2026 (Estimated)
Tri Boulder
Jul 23, 2027 (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, 2027 (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, 2027 (Estimated)
Step 4 Life 5K, 10K
Apr 23, 2027 (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, 2027 (Estimated)
Frank Shorter RACE4KIds' Health 5K
Apr 12, 2027 (Estimated)
Frank Shorter RACE4Kids' Health 5K and Expo, Where Science, Engineering and Health Collide4Kids
Apr 9, 2027 (Estimated)
1 reviews
Miner Gold Rush
Sep 23, 2026 (Estimated)
Runway 5K Run for the Angels
Oct 7, 2026 (Estimated)
Brush Rush
Jun 24, 2027 (Estimated)
Autumn Color Run Half Marathon, 10K, 5K & Fun Run
Sep 16, 2026 (Estimated)
Collegiate Peaks Trail Run
May 6, 2027 (Estimated)
Independence Day Freedom 5K
Jul 4, 2027 (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, 2027 (Estimated)
runBlossom Half Marathon, 5-Mile, 5K & Kids Run
May 6, 2027 (Estimated)
Castle Pines Run Wild
Aug 27, 2026 (Estimated)
Run the Ridge 5K
Jun 25, 2027 (Estimated)
5K Memorial Run for EPIC for Drug Awareness
Sep 18, 2026 (Estimated)
Cinco de Mayo Trail Run - Castle Rock
May 5, 2027 (Estimated)
Climb 4 Change
May 13, 2027 (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, 2027 (Estimated)
New Years Eve Rockn Run
Dec 31, 2026 (Estimated)
Reece's Roundup
Jul 15, 2027 (Estimated)
Summer Classic 5K/1M
Aug 20, 2026 (Estimated)
Tri the Rock
May 21, 2027 (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, 2027 (Estimated)
Grace's Race
May 7, 2027 (Estimated)
High Line Canal Run
May 20, 2027 (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, 2027 (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, 2027 (Estimated)
Cherry Hills Chase 5K
Jun 10, 2027 (Estimated)
Cimarron Endurance Race
May 7, 2027 (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, 2027 (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, 2027 (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)
Cheyenne Mountain Trail Race
Apr 29, 2027 (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)
Heart Walk Colorado Springs
Jun 9, 2027 (Estimated)
High Drive Challenge
Jun 4, 2027 (Estimated)
Jeffrey Ray Davis Sepsis Challenge 5K
Jul 8, 2027 (Estimated)
1 reviews
Judicial District Crime Victims' Rights Week 5K
Apr 15, 2027 (Estimated)
Kokopelli Kids Trail Running Series
May 5, 2027 (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, 2027 (Estimated)
Pikes Peak Region Peace Officers Memorial Valor Run
May 20, 2027 (Estimated)
Protect the Children 5K
Apr 22, 2027 (Estimated)
Purple Run - Colorado Springs
Apr 2, 2027 (Estimated)
Rattler Trail Race
Apr 15, 2027 (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, 2027 (Estimated)
Rocky Mountain State Games Triathlon
Jul 23, 2027 (Estimated)
Ruffin' Zombies
Oct 28, 2026 (Estimated)
Run for Rwanda 5K
Aug 5, 2026 (Estimated)
Run to the Shrine
May 20, 2027 (Estimated)
Southeast Springs 5K
Aug 5, 2026 (Estimated)
Support the Sport 5K
Sep 30, 2026 (Estimated)
Take 5 in the Garden
May 6, 2027 (Estimated)
Tiger Classic 5K
Oct 15, 2026 (Estimated)
Tortoise & Hare
Apr 8, 2027 (Estimated)
Trek The Trail 5K
Oct 15, 2026 (Estimated)
Turkey Trot Predict
Nov 18, 2026 (Estimated)
UCCS Bash the Bluffs 5K
Apr 22, 2027 (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, 2027 (Estimated)
YMCA / Kaiser Permanente Turkey Trot 5K
Nov 23, 2026 (Estimated)
Color Fun Fest 5K Denver
Jun 24, 2027 (Estimated)
Colorado Rapids 5K and Dribble
Oct 23, 2026 (Estimated)
Foam Glow 5K - Denver
Jul 22, 2027 (Estimated)
Abominable Winter Adventure Run
Jan 28, 2027 (Estimated)
Conifer's Run the Ranch 5K
Jun 10, 2027 (Estimated)
Elevation Run
Jul 29, 2026 (Estimated)
Cortez Burst Triathlon
Jul 4, 2027 (Estimated)
Pueblo to Pueblo Run
Apr 29, 2027 (Estimated)
Creede Mountain Run
Sep 2, 2026 (Estimated)
4th of July Gothic Trail Run
Jul 4, 2027 (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, 2027 (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)
Back2School 5K
Aug 12, 2026 (Estimated)
Bellco Colfax 5K
May 20, 2027 (Estimated)
Big Gay 5K Denver
Jun 17, 2027 (Estimated)
Boo-tiful Vista
Oct 29, 2026 (Estimated)
Boo-tiful Vista 5K Run and Walk
Oct 29, 2026 (Estimated)
bRUNch - Denver Telegraph
Apr 30, 2027 (Estimated)
bRUNch At Postino LoHi
May 7, 2027 (Estimated)
bRUNch Run - Denver
Oct 8, 2026 (Estimated)
BT5K Denver
May 6, 2027 (Estimated)
Bubble Run - Denver
Jul 8, 2027 (Estimated)
Bunny Bolt 5K/10K
Apr 15, 2027 (Estimated)
Chasing Unicorns 5K
Mar 19, 2027 (Estimated)
Cherry Creek Sneak
Apr 23, 2027 (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, 2027 (Estimated)
1 reviews
Corner Store Country Run - Denver
Jul 8, 2027 (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 bRUNch At Night With Snooze - Union Station
Jun 1, 2027 (Estimated)
Denver Challenge
Jun 17, 2027 (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, 2027 (Estimated)
Denver Undy Run
Jun 24, 2027 (Estimated)
Denver Veterans Day Run
Nov 5, 2026 (Estimated)
Destination Health Walk, Run, Learn
Jul 22, 2027 (Estimated)
Dog Days of Summer
Aug 20, 2026 (Estimated)
Donor Dash - Denver
Jul 16, 2027 (Estimated)
El Grito 5K - Denver
Sep 10, 2026 (Estimated)
Father's Day 5K/10K - Denver
Jun 18, 2027 (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, 2027 (Estimated)
1 reviews
GHC Run For Haiti 5K
Sep 17, 2026 (Estimated)
Graffiti Run - Denver
Apr 23, 2027 (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, 2027 (Estimated)
Hoppin' Half Marathon, 10K & 5K
Mar 25, 2027 (Estimated)
Hot Trot 5K - Denver
Jun 10, 2027 (Estimated)
IOCC Pan-Orthodox 5K
Aug 19, 2026 (Estimated)
Jingle Bell Run - Denver
Dec 10, 2026 (Estimated)
Jodi's Race for Awareness
Jun 10, 2027 (Estimated)
Just For J 5K - Denver
Jul 22, 2027 (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, 2027 (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, 2027 (Estimated)
Move Forward 5K/10K
Sep 16, 2026 (Estimated)
MuckFest MS Denver
Jul 15, 2027 (Estimated)
Northside Stride 5K
Jun 24, 2027 (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, 2027 (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, 2027 (Estimated)
Rise Up 5k - Denver CO
Jul 1, 2027 (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, 2027 (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, 2027 (Estimated)
Run MS Denver
May 6, 2027 (Estimated)
Running Wild - Denver
Jun 17, 2027 (Estimated)
Sand Creek Half Marathon, 5K & 10K
Jul 8, 2027 (Estimated)
Scream Scram 5K
Oct 20, 2026 (Estimated)
Second Chance 5K - Denver
Apr 8, 2027 (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, 2027 (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)
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, 2027 (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, 2027 (Estimated)
Durango Parks & Recreation Triathlon
Aug 5, 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, 2027 (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, 2027 (Estimated)
La Sportiva Boneyard Boogie Trail Run
May 20, 2027 (Estimated)
LG Tri Splash/Grind/Sprint
Jul 8, 2027 (Estimated)
Thanks4Giving Race
Nov 19, 2026 (Estimated)
Edgewater 5K
May 13, 2027 (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, 2027 (Estimated)
Devil on the Divide
Sep 9, 2026 (Estimated)
High Plains Elementary Fun Run
May 13, 2027 (Estimated)
Jeremy Bitner Fallen Officer 5K/10K Run
Jun 17, 2027 (Estimated)
Colorado Firecracker Run
Jul 4, 2027 (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)
Estes Park Marathon, Half Marathon, 10K & 5K
Jun 18, 2027 (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, 2027 (Estimated)
Elk Meadow Winter Trail Race
Feb 25, 2027 (Estimated)
EPRD Kid's Triathlon
Aug 20, 2026 (Estimated)
Evergreen Sprint Triathlon
Jul 23, 2027 (Estimated)
Evergreen Town Race
Aug 6, 2026 (Estimated)
1 reviews
Fall EverGold Trail Race
Oct 7, 2026 (Estimated)
Freedom Run 5K - Evergreen
Jul 4, 2027 (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, 2027 (Estimated)
Run Barefoot 5K
Sep 16, 2026 (Estimated)
Spartan Sprint - Colorado
May 14, 2027 (Estimated)
Spartan Super - Colorado
May 13, 2027 (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, 2027 (Estimated)
Color Vibe 5K - Ft. Collins
Apr 15, 2027 (Estimated)
Colorado Marathon, Half Marathon, 5K & 10K
May 7, 2027 (Estimated)
CSU Homecoming 5K
Oct 14, 2026 (Estimated)
Fast and the Furriest 5K - Fort Collins
Apr 29, 2027 (Estimated)
1 reviews
Father's Day 5K - Fort Collins
Jun 18, 2027 (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, 2027 (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, 2027 (Estimated)
Swift Sprint
Apr 28, 2027 (Estimated)
Vanilla Day 5K
Sep 23, 2026 (Estimated)
Wild West Relay
Aug 4, 2026 (Estimated)
Chick-fil-A Family 5K
Jun 17, 2027 (Estimated)
Jingle Bell 5K - Fountain
Dec 9, 2026 (Estimated)
No Child Wet Behind - Fountain
May 21, 2027 (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, 2027 (Estimated)
Mountain Goat Kids Trail Running Race 1
Jun 27, 2027 (Estimated)
Turkey Day 5K - Frisco
Nov 24, 2026 (Estimated)
Girl's on the Run 5K - Fruita
May 6, 2027 (Estimated)
Mike the Headless Chicken 5K
Jun 3, 2027 (Estimated)
1 reviews
Rumble at 18 Road
Apr 22, 2027 (Estimated)
Sweet Heart 5K/10K
Feb 18, 2027 (Estimated)
Strawberry Shortcut 5K, 10K
Jun 18, 2027 (Estimated)
1 reviews
Walk MS & 5K Run - Glenwood Springs
May 20, 2027 (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, 2027 (Estimated)
Golden Gallop 5K/10K
Sep 24, 2026 (Estimated)
Grizzly Growl 5K
Oct 1, 2026 (Estimated)
Mine Shaft Half
May 20, 2027 (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, 2027 (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, 2027 (Estimated)
Gauntlet - Grand Junction
May 13, 2027 (Estimated)
Grand Mesa Ultras
Jul 29, 2026 (Estimated)
Larchwood Inns Memory 5K
Jun 24, 2027 (Estimated)
Mesa County Sheriff's Office Torch Run
May 19, 2027 (Estimated)
Monument Downhill 5K
Jul 30, 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, 2027 (Estimated)
5K for a Cure - Greeley
Jun 3, 2027 (Estimated)
Aims Community College Aardvark Fun Run
Apr 29, 2027 (Estimated)
Fiesta 5K - Greeley
May 6, 2027 (Estimated)
Frontier Academy Community 5K
Aug 19, 2026 (Estimated)
Greeley Center for Independence 5K
May 20, 2027 (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, 2027 (Estimated)
Richard's Race 5K
Jul 15, 2027 (Estimated)
Run 4 Greeley
Jul 4, 2027 (Estimated)
Run for Refugees - Greeley
May 13, 2027 (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, 2027 (Estimated)
ThunderSplash Dash
Apr 22, 2027 (Estimated)
Kennebec Mountain Run
Jul 29, 2026 (Estimated)
BackCountry Run Wild 5K
May 7, 2027 (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, 2027 (Estimated)
HRCA Mother's Day 5K
May 12, 2027 (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, 2027 (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, 2027 (Estimated)
James Teter Memorial 5K
Sep 23, 2026 (Estimated)
Into The Wild Running Festival
Jun 3, 2027 (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)
All-Out Mardi Crawl Half Marathon, 10K, 5K & 1 Mile
Feb 11, 2027 (Estimated)
Federal Cup 5K
May 20, 2027 (Estimated)
Mountain Goat Kids - Lakewood
Jul 16, 2027 (Estimated)
Rock'n Run 5K
Jun 17, 2027 (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, 2027 (Estimated)
Colorado Cup Snowshoe Race
Jan 28, 2027 (Estimated)
Fish Hatchery 5K
Jun 4, 2027 (Estimated)
Haunted Hills Costume Run
Oct 29, 2026 (Estimated)
Leadville Firecracker 5K
Jul 4, 2027 (Estimated)
Airlife Memorial 5K/10K
May 13, 2027 (Estimated)
Bekah's Watermelon Run Walk Roll
Sep 30, 2026 (Estimated)
Chatfield Ultra Racing Events C.U.R.E.
Apr 29, 2027 (Estimated)
Clement Park Gobble Wobble
Nov 23, 2026 (Estimated)
Comeback Trail 5K - Littleton
May 21, 2027 (Estimated)
Denver Wicked Wine Run
Aug 26, 2026 (Estimated)
Firecracker 5K - Littleton
Jul 1, 2027 (Estimated)
Gluten Free Gallop 5K
Jun 4, 2027 (Estimated)
Great Pumpkin Haul
Oct 28, 2026 (Estimated)
HAE-In-Motion 5K - Littleton
Oct 22, 2026 (Estimated)
Hogback Hustle
Apr 30, 2027 (Estimated)
Justice Run
Oct 1, 2026 (Estimated)
Kick-Ick 5K
Aug 21, 2026 (Estimated)
Miles For Our Military
Jun 17, 2027 (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, 2027 (Estimated)
Race Against Pain Cluster Headache Awareness
Jun 17, 2027 (Estimated)
Rockin' On the River 5K
Apr 7, 2027 (Estimated)
Rocky Mountain Brew Runs at St. Patrick's Brewing
Mar 11, 2027 (Estimated)
Run For Remembrance
May 7, 2027 (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, 2027 (Estimated)
Longmont Half Marathon & 5K
Jul 4, 2027 (Estimated)
Longmont Sunrise Stampede
Aug 12, 2026 (Estimated)
Longmont Trail Half Marathon, 10K & 5K
Jul 23, 2027 (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, 2027 (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, 2027 (Estimated)
Try-a-Tri - Longmont
Jun 3, 2027 (Estimated)
Let Freedom Run - Louisville
Jul 4, 2027 (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, 2027 (Estimated)
Taste of Louisville 5K
Jun 3, 2027 (Estimated)
Fire Hydrant 5
Jun 3, 2027 (Estimated)
Loveland Lake to Lake Triathlon
Jun 24, 2027 (Estimated)
1 reviews
Loveland Liberty 5K
Jul 4, 2027 (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, 2027 (Estimated)
Sierra's Race Against Meningitis
Jun 15, 2027 (Estimated)
Valley 5000 Run
Aug 18, 2026 (Estimated)
La Sportiva Trail Run Relay featuring the Beer Relay
Jun 3, 2027 (Estimated)
Old Man Winter Rally
Feb 12, 2027 (Estimated)
Manassa Pioneer Days 5K
Jul 22, 2027 (Estimated)
1 reviews
Mancos Cowboy Half Marathon, 5K & Fun Run
Jun 24, 2027 (Estimated)
Barr Trail Mountain Race
Jul 16, 2027 (Estimated)
Lead King Loop 25K & Quarry Climb 12.5K
Sep 17, 2026 (Estimated)
Park to Art Run Races
Jun 3, 2027 (Estimated)
Run for Your Life 5K - Meeker
Jul 4, 2027 (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, 2027 (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, 2027 (Estimated)
Firecrackers and Flapjacks Run
Jul 4, 2027 (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, 2027 (Estimated)
Turkey Track Trail Run
Jun 3, 2027 (Estimated)
24 Hours of Palmer Lake Fun Run
Apr 15, 2027 (Estimated)
4th of July Fun Run - Palmer Lake
Jul 4, 2027 (Estimated)
Creepy Crawl 5K - Palmer Lake
Oct 28, 2026 (Estimated)
Genesis Adventure Race
Apr 15, 2027 (Estimated)
Cattle Crossing 5K
Jun 3, 2027 (Estimated)
Commitment Day 5K - Parker
Jan 1, 2027 (Estimated)
Divinity Dash
Sep 9, 2026 (Estimated)
Kids' TRY-athlon
Jul 22, 2027 (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, 2027 (Estimated)
Parker Family 5K
May 21, 2027 (Estimated)
Turkey Day 5K - Parker
Nov 23, 2026 (Estimated)
Town of Peetz Colorful Fun Run
May 20, 2027 (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, 2027 (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, 2027 (Estimated)
Spank Blasing Run
Apr 22, 2027 (Estimated)
Valentine Twosome Relay
Feb 12, 2027 (Estimated)
Vineland Middle School My School Color Run
May 20, 2027 (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, 2027 (Estimated)
Color Run Rangely
Jul 1, 2027 (Estimated)
La Sportiva Half Marathon, 5K & 10K
Jul 22, 2027 (Estimated)
Log Hill Hustle
Sep 16, 2026 (Estimated)
1 reviews
Law Enforcement 5K Torch Run
May 20, 2027 (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, 2027 (Estimated)
FIBArk Hill Climb
Jun 15, 2027 (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, 2027 (Estimated)
Rocky Mountain Triathlon
Jul 30, 2026 (Estimated)
Hardrock 100
Jul 21, 2027 (Estimated)
Kendall Mountain Run
Jul 22, 2027 (Estimated)
Silverton Challenge - Day 1
Aug 11, 2026 (Estimated)
Silverton Double Dirty 30
Sep 23, 2026 (Estimated)
Ragnar Trail Relay - Snowmass
Jun 9, 2027 (Estimated)
Tough Mudder - Colorado
Jul 15, 2027 (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, 2027 (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, 2027 (Estimated)
Turkey Trot - Steamboat Springs
Nov 24, 2026 (Estimated)
High Plains Turkey Trot
Nov 24, 2026 (Estimated)
Tri on the Plains
Jun 25, 2027 (Estimated)
1 reviews
Stoneham Stoneham
May 29, 2027 (Estimated)
Leprechaun 5K
Mar 12, 2027 (Estimated)
Superior Mile
Jul 4, 2027 (Estimated)
Superior Stocking Run
Dec 17, 2026 (Estimated)
Blisters & Brews 5K
Sep 16, 2026 (Estimated)
Rundola Telluride's Fourth of July Race
Jul 4, 2027 (Estimated)
Bubble Boogie 5K
Jun 3, 2027 (Estimated)
Cottonwood Classic 5K
May 20, 2027 (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, 2027 (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)
Krueger Family Shamrock Shuffle Snowshoe Race
Mar 18, 2027 (Estimated)
La Sportiva HillClimb
Jul 8, 2027 (Estimated)
Mountain Games - Pepi's Face-Off
Jun 11, 2027 (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, 2027 (Estimated)
All-Out Dog Days Half Marathon, 10K, 5K & 1-Mile
Jul 22, 2027 (Estimated)
Bobcat Boogie 5K - Westminster
Apr 8, 2027 (Estimated)
Colorado Women's Classic - Westminster
May 14, 2027 (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)
Lifetime Indoor Triathlon - Westminster, CO
Jan 8, 2027 (Estimated)
Miles for Smiles 5K - Westminster
May 21, 2027 (Estimated)
Neighborhood Fun Run Westminster Road Runner
Jun 24, 2027 (Estimated)
Prairie Dog Half Marathon & 5K
Sep 16, 2026 (Estimated)
Prediction Run Westminster
Mar 4, 2027 (Estimated)
Puma Prowl
May 6, 2027 (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, 2027 (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, 2027 (Estimated)
Daysping Dash 5K
Sep 9, 2026 (Estimated)
Pelican Fest Triathlon
May 28, 2027 (Estimated)
Run For Orphans 5K
Nov 4, 2026 (Estimated)
Habitat Hobble - 5K/10K
Jun 24, 2027 (Estimated)
Rendezvous Run for Independence
Jul 1, 2027 (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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