Race Discovery

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

362 events found

I Can 5k logo
Oct
03

I Can 5k

Thornton, Colorado, United States
Free
Running
5K +2
Spooky Sprint - Denver logo
Oct
03

Spooky Sprint - Denver

Littleton, Colorado, United States
$25.00 - $67.00
Running
1.6K 5K 10K Half-Marathon
Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon logo
Oct
03

Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon

Canon City, Colorado, United States
$40.00 - $80.00
Running
5K 12.9K Half-Marathon 10K +2
Colorado Springs Marathon, Half, 5K, and Kids K logo
Oct
03

Colorado Springs Marathon, Half, 5K, and Kids K

Colorado Springs, Colorado, United States
Free - $120.00
Running
Marathon Half-Marathon 5K 1K +11
Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run logo
Oct
04

Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run

Windsor, Colorado, United States
$20.00 - $115.00
Running
Marathon Half-Marathon 10K 5K +1
RMRR October Trophy Series logo
Oct
04

RMRR October Trophy Series

Aurora, Colorado, United States
$10.00
Running
12.9K 5K
The Long View Marathon logo
Oct
10

The Long View Marathon

Fort Collins, Colorado, United States
$35.00 - $110.00
Running
Marathon Half-Marathon 5K
Breckenridge RunFest logo
Oct
10

Breckenridge RunFest

Breckenridge, Colorado, United States
$25.00 - $120.00
Running
10K 5K 1.6K Marathon +1
Footsteps for Families 5k Fun Run & Concert logo
Oct
10

Footsteps for Families 5k Fun Run & Concert

Windsor, Colorado, United States
$25.00 - $50.00
Running
5K
Manitou 5K logo
Oct
10

Manitou 5K

Manitou Springs, Colorado, United States
$25.00 - $40.00
Running
5K
Dialysis Dash 5K logo
Oct
10

Dialysis Dash 5K

Grand Junction, Colorado, United States
$30.00
Running
5K
Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA logo
Oct
10

Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States
$30.00 - $45.00
Running
5K 10K Half-Marathon 1.6K +8