Race Calendar in Colorado, United States

Heritage Eagles 5K

Littleton, Colorado, United States

18 Jul, 2026 (Sat)

$27.50

Running

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

2026 OCA Colorado 5K Panda Run

Denver, Colorado, United States

18 Jul, 2026 (Sat)

$35.00

Running, Walking

5K 1K

CU Anschutz Run Club 5K

Aurora, Colorado, United States

18 Jul, 2026 (Sat)

$7.00 - $20.00

Running

5K

TransRockies Run Charity Bibs

Buena Vista, Colorado, United States

18 Jul, 2026 (Sat) – 21 Jul, 2026

Free

Trail running

Ultra

Spring Creek Memorial Trail Run

Steamboat Springs, Colorado, United States

18 Jul, 2026 (Sat)

$35.75 - $50.75

Running

15.3K 5K

Expedition Maroon Bells

Aspen, Colorado, United States

18 Jul, 2026 (Sat) – 23 Jul, 2026

Free - $735.00

Trail running

45.1K

49th Annual Manassa Pioneer Days 5K Run

Manassa, Colorado, United States

18 Jul, 2026 (Sat)

$20.00

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

Audi Power of Four Trail Run

Aspen, Colorado, United States

18 Jul, 2026 (Sat)

$115.00 - $135.00

Trail running

49.9K 24.1K 10K

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

Barr Trail Mountain Race

Manitou Springs, Colorado, United States

19 Jul, 2026 (Sun)

Free - $500.00

Running

20.3K