Race Discovery

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

513 events found

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
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
Run Juneteenth Day 5K/10K/13.1 Denver/Aurora logo
Jun
19

Run Juneteenth Day 5K/10K/13.1 Denver/Aurora

Centennial, Colorado, United States
$30.00 - $45.00
Running
5K 10K Half-Marathon 1.6K +2
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
Unicorn 5k (North) logo
Jun
19

Unicorn 5k (North)

Thornton, Colorado, United States
$18.00 - $41.00
Running
5K 1K
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
Father's Day Classic 10k, 5k, & 1 Mile logo
Jun
20

Father's Day Classic 10k, 5k, & 1 Mile

Arvada, Colorado, United States
$12.00 - $44.00
Running
10K 5K 1.6K +2
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
Independence Day Freedom 5K logo
Jul
04

Independence Day Freedom 5K

Buena Vista, Colorado, United States
$25.00
Running
5K 3K
Greeley Freedom 5k Walk & Run logo
Jul
04

Greeley Freedom 5k Walk & Run

Greeley, Colorado, United States
$29.00
Running
5K