Browse thousands of upcoming running events near you with our race directory - we have everything from 5k's to ultra marathons.

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Desert RATS Trail Running Festival

Apr 11, 2025
Fruita, CO
10K
Typical weather
65°
37°
4%

Boulder Rez Half

Apr 12, 2025
Boulder, CO
13.1M10K5K
Typical weather
63°
34°
11%

Horsetooth Half Marathon

Apr 13, 2025
Fort Collins, CO
13.1M
Typical weather
63°
35°
8%

Platte River Half Marathon

Apr 13, 2025
Littleton, CO
13.1M13.1M
Typical weather
61°
32°
9%

Spring Fling Prairie Dog Half

Apr 13, 2025
Arvada, CO
13.1M10K5K
Typical weather
62°
32°
8%

Three Creeks Half Marathon

Apr 13, 2025
Denver, CO
13.1M
Typical weather
62°
33°
6%

Rattler Trail Race

Apr 19, 2025
Colorado Springs, CO
31.1M15.5M10K
Typical weather
62°
34°
5%

Rock Hawk

Apr 19, 2025
Castle Rock, CO
31.1M15.5M10K5K
Typical weather
60°
33°
8%

Can't Be Mad Running Festival

Apr 19, 2025
Erie, CO
3HR3HR10K5K
Typical weather
64°
35°
8%

All-Out Beat the Heat

Apr 19, 2025
Westminster, CO
13.1M10K
Typical weather
64°
35°
8%

Great Western Trail Race

Apr 19, 2025
Severance, CO
13.1M10K5K
Typical weather
61°
34°
9%

Most Eggcellent 10K, 5K

Apr 19, 2025
Buena Vista, CO
10K5K
Typical weather
58°
28°
4%

Rock Hawk Trail Races

Apr 19, 2025
Castle Rock, CO
31.1M15.5M10K5K
Typical weather
60°
33°
8%

Cheyenne Mountain Trail Race

Apr 26, 2025
Colorado Springs, CO
31.1M15.5M10K
Typical weather
62°
36°
6%

Royal Gorge Groove

Apr 26, 2025
Cañon City, CO
34.2M16.8M10K5K
Typical weather
66°
35°
7%

Bigfoot Half Marathon and 5k

Apr 26, 2025
Estes Park, CO
13.1M5K
Typical weather
52°
27°
12%

Earth Day 5K/10K

Apr 26, 2025
Loveland, CO
10K5K1M
Typical weather
63°
32°
11%

Runs With Scissors Races

Apr 26, 2025
Brighton, CO
31.1M26.2M13.1M
Typical weather
63°
35°
9%

SOAR 5K

Apr 26, 2025
Golden, CO
5K
Typical weather
60°
37°
12%

NOCO Half Marathon and 10K

Apr 27, 2025
Loveland, CO
13.1M10K
Typical weather
63°
32°
11%
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