5K races in Colorado, United States — 2026 running calendar

Jan

24

Yeti Chase 5k/10k

Morrison, Colorado, United States

$25.00 - $125.00

Running

5K 10K +1

Jan

30

Time Travel Half-Marathon/5K/10K - Denver

Denver, Colorado, United States

$15.00 - $50.00

Running

Kid's Dash 1.6K 5K 10K +3

Jan

30

Coffee Lover Run Denver/Aurora

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Jan

31

Time Travel Half-Marathon/5K/10K - Colorado Springs

Colorado Springs, Colorado, United States

$15.00 - $48.00

Running

Kid's Dash 1.6K 5K 10K +3

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

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