Running Race Calendar in Colorado, United States

Stitch, Sip, & Support

Aurora, Colorado, United States

24 Jun, 2026 (Wed)

$46.23

Running

Stitch, Sip, & Support - Girls on the Run

BRR All-Comers Summer Track & Field Series #2

Boulder, Colorado, United States

25 Jun, 2026 (Thu)

$20.00

Running

3K

The Four Legged 5k

Bailey, Colorado, United States

26 Jun, 2026 (Fri)

$10.00 - $20.00

Running

5K

Trail Town Races

Ridgway, Colorado, United States

27 Jun, 2026 (Sat)

$25.00

Running

8K 16.1K

Fitness Expo On Tap at the Colorado Tap House

Arvada, Colorado, United States

27 Jun, 2026 (Sat)

Free - $20.00

Running

5K FREE Yoga On Tap 1.6K I want the Event Shirt! +1

Denver Pride 5K

Denver, Colorado, United States

27 Jun, 2026 (Sat)

$50.00

Running

5K

Before The Fourth 5k

Littleton, Colorado, United States

27 Jun, 2026 (Sat)

$45.00

Running

5K

Pearl Street Mile

Boulder, Colorado, United States

27 Jun, 2026 (Sat)

$40.00

Running

1.6K

Slacker Half Marathon-Relay-4-Mile Races

Georgetown, Colorado, United States

27 Jun, 2026 (Sat)

$35.00 - $150.00

Running

Half-Marathon 6.4K +3

SBT TRL

Steamboat Springs, Colorado, United States

27 Jun, 2026 (Sat)

$35.75 - $55.75

Running

10K 5K

Blue Sky Ascent & Round Trip (formerly the Mt. Evans Ascent)

Idaho Springs, Colorado, United States

28 Jun, 2026 (Sun)

$175.00 - $185.00

Running

23.3K 46.7K

Burro Buster 5k

Fairplay, Colorado, United States

04 Jul, 2026 (Sat)

$35.00

Running

5K