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Colorado Race Calendar

Found 432 upcoming events.

Dash & Dine 5k #1
Run

Dash & Dine 5k #1

Boulder, CO
April 28, 2026
5K
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Friends of the National Center Science Stride 5K
Run

Friends of the National Center Science Stride 5K

Boulder, CO
May 1, 2026
5K
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Nielson Challenge
Run

Nielson Challenge

Colorado Springs, CO
May 2, 2026
2M
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Adams County Foster Care 5K Run/Walk and 1 mile fun run
Run
Price rises in 4 days

Adams County Foster Care 5K Run/Walk and 1 mile fun run

Brighton, CO
May 2, 2026
5K1M
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Bob Turner Classic 5k Run/Walk
Run

Bob Turner Classic 5k Run/Walk

Berthoud, CO
May 2, 2026
5K
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MayFest Fun Run
Run

MayFest Fun Run

Parachute, CO
May 2, 2026
5K
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Walk Run or Roll for Daniel
Run

Walk Run or Roll for Daniel

Colorado Springs, CO
May 2, 2026
5K
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Greenland Trail Races
Run
Price rises in 4 days

Greenland Trail Races

Larkspur, CO
May 2, 2026
50K25K8M4M
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Cinco De Mayo Run 5K/10K/13.1 DENVER/AURORA
Run

Cinco De Mayo Run 5K/10K/13.1 DENVER/AURORA

Centennial, CO
May 2, 2026
13.1M10K5K
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Collegiate Peaks Trail Run
Run

Collegiate Peaks Trail Run

Buena Vista, CO
May 2, 2026
50M25M
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CollaBEERation 5k & Brew Fest Party
Run

CollaBEERation 5k & Brew Fest Party

Longmont, CO
May 2, 2026
5K
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Sunrise Marathon 5K/10K/13.1 DENVER/AURORA
Run

Sunrise Marathon 5K/10K/13.1 DENVER/AURORA

Centennial, CO
May 2, 2026
13.1M10K5K
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DUCK WADDLE 5K
Run

DUCK WADDLE 5K

Estes Park, CO
May 2, 2026
5K
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Run Blossom
Run

Run Blossom

Cañon City, CO
May 2, 2026
5K
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DU Spring Sprint 5k
Run
Price rises in 4 days

DU Spring Sprint 5k

Gunnison, CO
May 2, 2026
5K
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High Line Canal 5K/10K Run
Run

High Line Canal 5K/10K Run

Centennial, CO
May 2, 2026
10K5K
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Denver Beer Company 50k Run
Run

Denver Beer Company 50k Run

Arvada, CO
May 2, 2026
50K
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Take 5 in the Garden
Run

Take 5 in the Garden

Colorado Springs, CO
May 2, 2026
5M5K9.5M
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Frank Shorter Track Classic
Run

Frank Shorter Track Classic

Longmont, CO
May 3, 2026
2M1M800m
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RMRR May Trophy Series
Run
Price rises in 5 days

RMRR May Trophy Series

Denver, CO
May 3, 2026
5M5K
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Water Wells for Africa 5k Walk/Run
Run

Water Wells for Africa 5k Walk/Run

Silt, CO
May 3, 2026
5K
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Longmont Half & 5k (LM Half)
Run
Price rises in 4 days

Longmont Half & 5k (LM Half)

Longmont, CO
May 3, 2026
13.1M5K
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Altitude Elementary Moose Mudder
Run
Price rises in 5 days

Altitude Elementary Moose Mudder

Aurora, CO
May 3, 2026
5K1K
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The Colorado Marathon
Run
Price rises in 3 days

The Colorado Marathon

Fort Collins, CO
May 3, 2026
26.2M13.1M10K5K
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Hayden Cog Run
Run
Price rises in 5 days

Hayden Cog Run

Hayden, CO
May 3, 2026
8.4M5K
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Rise Against Suicide - Emerge 5K
Run

Rise Against Suicide - Emerge 5K

Boulder, CO
May 3, 2026
5K
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May the 4th Be With You 5k
Run

May the 4th Be With You 5k

Westminster, CO
May 3, 2026
5K
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Women's Distance Festival 5K
Run

Women's Distance Festival 5K

Colorado Springs, CO
May 9, 2026
5K
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Five Star 5K, Mile of Smiles, and Wellness Festival
Run

Five Star 5K, Mile of Smiles, and Wellness Festival

Brighton, CO
May 9, 2026
5K1M
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Hometown Half Marathon & 5k/10k - Colorado Springs
Run
Price rises in 9 days

Hometown Half Marathon & 5k/10k - Colorado Springs

Colorado Springs, CO
May 9, 2026
13.1M10K5K
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Adventure Fest at 18 Road
Run

Adventure Fest at 18 Road

Fruita, CO
May 9, 2026
13.1M
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Colterris Wine Run 5k
Run
Price rises in 1 day

Colterris Wine Run 5k

Palisade, CO
May 9, 2026
5K
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Parker Parks and Recreation Miles over the Meadow Mother’s Day 5K & Family Fun Trek
Run
Price rises in 11 days

Parker Parks and Recreation Miles over the Meadow Mother’s Day 5K & Family Fun Trek

Parker, CO
May 9, 2026
5K
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Cherry Creek Race for the Watershed 2026
Run

Cherry Creek Race for the Watershed 2026

Aurora, CO
May 9, 2026
5K
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HRCA Mother's Day 5K
Run
Price rises in 8 days

HRCA Mother's Day 5K

Littleton, CO
May 9, 2026
5K
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Run For The Trees - 2 Mile Fun Run
Run

Run For The Trees - 2 Mile Fun Run

Loveland, CO
May 9, 2026
2M
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Run for the Trees - BSBF 2-Mile Run
Run

Run for the Trees - BSBF 2-Mile Run

Loveland, CO
May 9, 2026
2M
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Quad Rock 25 & 50 Mile Trail Races
Run

Quad Rock 25 & 50 Mile Trail Races

Bellvue, CO
May 9, 2026
50M25M
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Run to the Shrine 2026 - Saturday, May 9
Run

Run to the Shrine 2026 - Saturday, May 9

Colorado Springs, CO
May 9, 2026
4M
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Colorado Rockies Home Run 5K
Run

Colorado Rockies Home Run 5K

Denver, CO
May 9, 2026
5KYouth
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Celebration of Moms 5k & Family Fun Run
Run

Celebration of Moms 5k & Family Fun Run

Buena Vista, CO
May 9, 2026
5K
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Kadet Football 5K
Run

Kadet Football 5K

Colorado Springs, CO
May 9, 2026
5K
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The Great CO74 Trail Run
Run

The Great CO74 Trail Run

Kittredge, CO
May 9, 2026
7.4M
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Firehouse 5k @ Station 26 Brewing
Run

Firehouse 5k @ Station 26 Brewing

Denver, CO
May 9, 2026
5K
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Valkyrie Trail Race
Run

Valkyrie Trail Race

Colorado Springs, CO
May 9, 2026
50K26.2M30K13.1M8M4M
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Hometown Half Marathon & 5k/10k - Denver
Run
Price rises in 10 days

Hometown Half Marathon & 5k/10k - Denver

Westminster, CO
May 10, 2026
13.1M10K5K
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Colorado Women's Classic - Westminster
Run
Price rises in 3 days

Colorado Women's Classic - Westminster

Westminster, CO
May 10, 2026
10M10K5K
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Denver Mother's Day 5K
Run
Price rises in 3 days

Denver Mother's Day 5K

Denver, CO
May 10, 2026
5K
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Super Mom 5K/10K/Half - Colorado Springs
Run
Price rises in 5 days

Super Mom 5K/10K/Half - Colorado Springs

Colorado Springs, CO
May 10, 2026
13.1M10K5K
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Wings Space Race 5K
Run

Wings Space Race 5K

Denver, CO
May 10, 2026
5K
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