Find Your Next Half Marathon Colorado Race

Each Half Marathon Colorado race has links to its marketing page and registration page.

View all races in Colorado

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

Nov 25, 2026 (Estimated)

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

Nov 25, 2026 (Estimated)

Basalt Half Marathon

Jun 6, 2026 (Estimated)

Boulderthon - Inaugural Downtown Boulder Marathon & Half Marathon

Oct 11, 2026 (Estimated)

2026 Breckenridge Road Marathon

Saturday Oct 10, 2026

Castle Rock Trail Festival

Oct 6, 2026 (Estimated)

Carbon Valley Half Marathon & 5K

Saturday May 9, 2026 12 reviews

Carbon Valley Past Participant List

Feb 11, 2027 (Estimated)

Fall Equinox

Sep 30, 2026 (Estimated)

Fall Equinox 2017

Sep 17, 2026 (Estimated)

Horsetooth Half Marathon

Apr 14, 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)

Spring Equinox

Mar 26, 2027 (Estimated) 4 reviews

Spring Equinox Packet Pickup Reg

Mar 24, 2027 (Estimated)

Camp Hale Half Marathon

Jul 20, 2026 (Estimated)

Snowman Stampede

Feb 24, 2027 (Estimated)

Labor Day Mini Marathon

Sep 3, 2026 (Estimated)

Steamboat Stampede

Jan 31, 2027 (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)

Arvada Park to Park Half Marathon

Jun 3, 2026 (Estimated)

Ralston Creek Half Marathon & 5K

Feb 19, 2027 (Estimated)

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

Apr 9, 2026 (Estimated)

Golden Leaf Half Marathon

Sep 23, 2026 (Estimated)

Dam U Half Marathon & 5K

Sep 10, 2026 (Estimated)

Beaver Creek Trail Half Marathon & 10K

Aug 13, 2026 (Estimated)

Beaver Creek Trail Half Marathon, 10K & 5K

Aug 13, 2026 (Estimated)

Beulah Challenge Half Marathon, 10K & 5K

Oct 7, 2026 (Estimated)

Boulder Rez Half Marathon, 10K & 5K

Jun 4, 2026 (Estimated)

Breckenridge Hunky Dory Half Marathon

Aug 5, 2026 (Estimated)

Breckenridge Road Marathon, Half Marathon & 10K

Sep 16, 2026 (Estimated)

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

Sep 16, 2026 (Estimated)

Spirit Trail Run Half Marathon & 8K

May 28, 2026 (Estimated)

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

May 6, 2026 (Estimated)

Moonlight Miles 10K & Half Marathon - Clifton

Oct 7, 2026 (Estimated)

Hoof It 4 Harlie Half Marathon & 5K

Sep 23, 2026 (Estimated)

Chosen Marathon & Half Marathon

Apr 2, 2026 (Estimated)

NORAD Trail Race Marathon, Half Marathon & 4-Mile

May 21, 2026 (Estimated)

Super Half Marathon

Feb 5, 2027 (Estimated)

Colfax Marathon, Half Marathon, Relay & Urban 10-Miler

May 21, 2026 (Estimated)

Hoppin' Half Marathon, 10K & 5K

Mar 25, 2027 (Estimated)

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

Oct 15, 2026 (Estimated) 2 reviews

Sand Creek Half Marathon, 5K & 10K

Jul 8, 2026 (Estimated)

Durango Double Trail Run Half Marathon & 5K

Oct 7, 2026 (Estimated)

Durango Half Marathon

Jul 1, 2026 (Estimated) 1 reviews

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

Nov 6, 2026 (Estimated)

Steamworks Half Marathon

Jun 10, 2026 (Estimated)

Thirsty 13 Half Marathon

Aug 26, 2026 (Estimated)

Eagle Half Marathon & 10K

Jun 24, 2026 (Estimated)

Mountain Rats Half Marathon

Sep 23, 2026 (Estimated)

Erie Half Marathon & 5K

Aug 27, 2026 (Estimated)

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

Jun 18, 2026 (Estimated)

Rocky Mountain Half Marathon

Aug 12, 2026 (Estimated)

Bergen Peak Half Marathon

Aug 26, 2026 (Estimated)

Revel Rockies Marathon & Half Marathon

Jun 11, 2026 (Estimated)

South Park Trail Marathon & Half Marathon

Jun 10, 2026 (Estimated)

Black Squirrel Half Marathon

Sep 9, 2026 (Estimated)

Colorado Marathon, Half Marathon, 5K & 10K

May 7, 2026 (Estimated)

Equinox Half Marathon & 5-Mile

Sep 17, 2026 (Estimated)

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

Jul 29, 2026 (Estimated)

Run the Rockies Road Half Marathon & 10K

Jun 3, 2026 (Estimated)

Rabbit Valley Half Marathon

May 13, 2026 (Estimated)

Georgetown to Idaho Springs Half Marathon

Aug 12, 2026 (Estimated)

Slacker Half Marathon, Relay & 4-Mile

Jun 24, 2026 (Estimated)

Glenwood Canyon Shuffle Half Marathon

Oct 7, 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)

Black Hawk Trail Half Marathon & 10K

Jul 29, 2026 (Estimated)

Snow Mountain Ranch Half Marathon, 10K & 5K

Sep 23, 2026 (Estimated)

DreamCatcher Half Marathon

Mar 4, 2027 (Estimated)

Moonlight Miles 10K & Half Marathon - Grand Junction

Oct 7, 2026 (Estimated)

Denver Trail Half Marathon & 10K

Sep 16, 2026 (Estimated)

That Dam 13.1 & 5K Crush That Dam

Mar 5, 2027 (Estimated)

Backcountry Wilderness Half Marathon

Nov 4, 2026 (Estimated)

Highlands Ranch Half Marathon

Sep 4, 2026 (Estimated)

HRCA Backcountry Wilderness Half Marathon

Nov 4, 2026 (Estimated)

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

Feb 11, 2027 (Estimated)

The Bear Chase Trail Half Marathon & 10K

Oct 1, 2026 (Estimated)

East-West Trail Half Marathon & 10K

Jun 10, 2026 (Estimated)

Longmont Half Marathon & 5K

Jul 4, 2026 (Estimated)

Longmont Trail Half Marathon, 10K & 5K

Jul 23, 2026 (Estimated)

Louisville Trail Half Marathon, 10K & 5K

Oct 8, 2026 (Estimated)

Prairie Dog Half Marathon & 10K

Jan 15, 2027 (Estimated)

Skirt Sports 13er Half Marathon & 5K

Jun 4, 2026 (Estimated)

Mancos Cowboy Half Marathon, 5K & Fun Run

Jun 24, 2026 (Estimated)

NedNed Race Half Marathon, 10K & 5K

Sep 9, 2026 (Estimated)

Mount Sneffels Marathon & Half Marathon

Aug 12, 2026 (Estimated)

Palmer Lake Half Marathon & 10K

May 20, 2026 (Estimated)

Pueblo Marathon & Half Marathon

Feb 26, 2027 (Estimated)

Rock Canyon Half Marathon

Dec 3, 2026 (Estimated) 1 reviews

La Sportiva Half Marathon, 5K & 10K

Jul 22, 2026 (Estimated)

Eagle Half Marathon

Jun 24, 2026 (Estimated)

Silverthorne Half Marathon & 10K

Jun 24, 2026 (Estimated)

Mountain Madness Half Marathon & 10K

Jul 1, 2026 (Estimated)

Steamboat Marathon, Half Marathon & 10K

Jun 4, 2026 (Estimated)

Steamboat Stinger Marathon & Half Marathon

Aug 13, 2026 (Estimated)

Vail Pass Kicker Half Marathon

Jun 10, 2026 (Estimated)

Walsh Pikermi Half Marathon

Sep 4, 2026 (Estimated)

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

Jul 22, 2026 (Estimated)

Prairie Dog Half Marathon & 5K

Sep 16, 2026 (Estimated)

Westminster Trail Half Marathon

Apr 29, 2026 (Estimated)

Winter Park Half Marathon & 5K

Aug 5, 2026 (Estimated)

Find Your Next Half Marathon Colorado Race Near You

Find your next Colorado race by city. These races have star ratings, race maps, race results, race reviews, race charities, race products, etc.

All Colorado races

Find Your Next Half Marathon Colorado Charity Race

Some Half Marathon Colorado races may support a charity and raise funds to support and raise charitable donations. These charities may have fundraising teams that run for a cause and allow you to make a difference while running for a charity.

Colorado charity races

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