Race Discovery

10K races in Colorado, United States — 2026 running calendar

116 events found

Pioneer Prairie Dog Half, 10k & 5k logo
Aug
23

Pioneer Prairie Dog Half, 10k & 5k

Westminster, Colorado, United States
$45.00 - $85.00
Running
Half-Marathon 10K 5K
11th Annual Log Hill Hustle logo
Aug
23

11th Annual Log Hill Hustle

Ridgway, Colorado, United States
$40.00
Running Wheelchair
5K 10K
Run to Breast Cancer 5K/10K/13.1 DENVER/AURORA logo
Aug
29

Run to Breast Cancer 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States
$30.00 - $45.00
Running
5K 10K Half-Marathon 1.6K +2
James Test Site
Aug
30

James Test Site

Lyons, Colorado, United States
Running
5K 10K
The Beaver Run logo
Sep
05

The Beaver Run

Breckenridge, Colorado, United States
Free - $50.00
Running
5K 10K 15K 0.2K
Break Your Neck: Walk, Run, or Roll logo
Sep
05

Break Your Neck: Walk, Run, or Roll

Pueblo, Colorado, United States
Free
Running
5K 10K
Golden Harvest Half Marathon & 5k/10k - Denver logo
Sep
05

Golden Harvest Half Marathon & 5k/10k - Denver

Denver, Colorado, United States
$22.00 - $73.00
Running
5K 10K Half-Marathon 1.6K
Golden Harvest Half Marathon & 5k/10k - Colorado Springs logo
Sep
06

Golden Harvest Half Marathon & 5k/10k - Colorado Springs

Colorado Springs, Colorado, United States
$22.00 - $60.00
Running
1.6K 5K 10K Half-Marathon
Labor Day Half Marathon logo
Sep
07

Labor Day Half Marathon

Parker, Colorado, United States
$33.00 - $75.00
Running
Half-Marathon 10K 5K
14th Annual Superhero Event logo
Sep
10

14th Annual Superhero Event

Greeley, Colorado, United States
Free - $40.00
Running
10K 5K 1.6K Kid's Fun Run (Ages 6 & Under) +5
National Chocolate Day: Run for Chocolates 5K/10K/13.1 DENVER/AURORA logo
Sep
12

National Chocolate Day: Run for Chocolates 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States
$30.00 - $45.00
Running
5K 10K Half-Marathon 1.6K +2
RMRR September Trophy Series logo
Sep
13

RMRR September Trophy Series

Thornton, Colorado, United States
$10.00
Running
10K 5K