Race Discovery

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

436 events found

Denver Mother's Day 5K logo
May
09

Denver Mother's Day 5K

Denver, Colorado, United States
$26.99
Running
5K
Colorado Women's Classic - Westminster logo
May
09

Colorado Women's Classic - Westminster

Westminster, Colorado, United States
Free - $55.00
Running
5K 10K 16.1K Kids Fun Run (100 yards)
Colorado 13er (Half Marathon/10k/5k) logo
Jun
06

Colorado 13er (Half Marathon/10k/5k)

Louisville, Colorado, United States
$35.00 - $65.00
Running
Half-Marathon 10K 5K
Flamingo Day 5K logo
Jun
06

Flamingo Day 5K

Denver, Colorado, United States
$30.00
Running
5K
Alpha 5K Challenge logo
Jun
12

Alpha 5K Challenge

Boulder, Colorado, United States
Running
5K
All-Out Summer Breeze logo
Jun
12

All-Out Summer Breeze

Arvada, Colorado, United States
$20.00 - $65.00
Running
Half-Marathon 10K 5K +2
Red, White and Brew 5k, 10k & Half Marathon logo
Jun
19

Red, White and Brew 5k, 10k & Half Marathon

Windsor, Colorado, United States
$18.00 - $68.00
Running
5K 10K Half-Marathon 1.6K +2
Unicorn 5k (North) logo
Jun
19

Unicorn 5k (North)

Thornton, Colorado, United States
$18.00 - $41.00
Running
5K 1K
Treat Trot - Denver logo
Jun
19

Treat Trot - Denver

Denver, Colorado, United States
$17.00 - $42.00
Running
Kids Dash 1.6K 5K 10K +3
Treat Trot Colorado Springs logo
Jun
20

Treat Trot Colorado Springs

Colorado Springs, Colorado, United States
$17.00 - $42.00
Running
Kids Dash 1.6K 5K 10K +3
Red, White, and Warrior 5K logo
Jul
03

Red, White, and Warrior 5K

Grand Junction, Colorado, United States
$10.00 - $35.00
Running
5K Little Sparkler Sprint
Greeley Freedom 5k Walk & Run logo
Jul
04

Greeley Freedom 5k Walk & Run

Greeley, Colorado, United States
$29.00
Running
5K