Race Calendar in Colorado, United States

Spring Creek Memorial Trail Run

Steamboat Springs, Colorado, United States

18 Jul, 2026 (Sat)

$25.75 - $40.75

Running

15.3K 5K

Festival in the Clouds Firefighter 5K, Fun Run and Doggie Dash

Alma, Colorado, United States

18 Jul, 2026 (Sat)

Free - $30.00

Running

5K

Summer Splash Prairie Dog Half, 10k, & 5k

Castle Rock, Colorado, United States

18 Jul, 2026 (Sat)

$40.00 - $80.00

Running

Half-Marathon 10K 5K

2026 OCA Colorado 5K Panda Run

Denver, Colorado, United States

18 Jul, 2026 (Sat)

$35.00

Running, Walking

5K 1K

Heritage Eagles 5K

Littleton, Colorado, United States

18 Jul, 2026 (Sat)

$27.50

Running

5K

Parker Parks and Recreation Kids' TRY-athlon

Parker, Colorado, United States

18 Jul, 2026 (Sat)

TransRockies Run Charity Bibs

Buena Vista, Colorado, United States

18 Jul, 2026 (Sat) – 21 Jul, 2026

Free

Trail running

Ultra

Barr Trail Mountain Race

Manitou Springs, Colorado, United States

19 Jul, 2026 (Sun)

Free - $500.00

Running

20.3K

One Is Too Many: Veteran Suicide Awareness 5k and Kids Run

Greeley, Colorado, United States

19 Jul, 2026 (Sun)

$20.00 - $35.00

Running

5K 1.6K

Clear for Takeoff Virtual 5K

Colorado Springs, Colorado, United States

20 Jul, 2026 (Mon) – 27 Jul, 2026

$35.00

Running

5K

BRR All-Comers Summer Track & Field Series #4

Boulder, Colorado, United States

23 Jul, 2026 (Thu)

Free - $20.00

Running

Ultra 3.2K

14er Challenge

Buena Vista, Colorado, United States

23 Jul, 2026 (Thu) – 25 Jul, 2026

Trail running

40.2K