Running Race Calendar in Colorado, United States

Feb

06

All-Out Mardi Crawl

Arvada, Colorado, United States

$25.00 - $70.00

Running

Half-Marathon 10K 5K +2

Feb

06

Westy Winter Waggle 5&10k

Westminster, Colorado, United States

$35.00

Running

5K 10K

Feb

06

Stories Trail Runs

Colorado Springs, Colorado, United States

$60.00 - $100.00

Trail running Running

10.8K Half-Marathon 31.5K

Feb

13

Valentine's Day Run 5K/10K/13.1 Denver/Aurora

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Feb

14

The Toyota Super Half Marathon™& Game Day 5K™

Colorado Springs, Colorado, United States

$35.00 - $70.00

Running

Half-Marathon 5K

Feb

14

Ralston Creek Half Marathon & 5k

Arvada, Colorado, United States

$25.00 - $125.00

Running

Half-Marathon 5K +1

Feb

27

Run For Mental Health Denver/Aurora

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Feb

27

Run Together Against Breast Cancer Denver/Aurora

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Feb

28

Highlands Ranch 5k

Highlands Ranch, Colorado, United States

$43.00

Running

5K

Mar

06

Time to Paddy 5K/10K & Lucky 13.1 13.1 - Denver

Denver, Colorado, United States

Free - $55.00

Running

Kid's Dash 1.6K 5K 10K +4

Mar

07

Time to Paddy 5K/10K & Lucky 13.1 - Colorado Springs

Colorado Springs, Colorado, United States

Free - $42.00

Running

Kid's Dash 1.6K 5K 10K +4

Mar

07

Team CKF Running Series

Aspen, Colorado, United States

Free

Running

2026 Tokyo Marathon - Team CKF 2026 BMW Berlin Marathon - Team CKF 2027 Tokyo Marathon - Team CKF