Race Discovery

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

362 events found

Run for Bagels 5K/10K/13.1 Denver/Aurora logo
Apr
10

Run for Bagels 5K/10K/13.1 Denver/Aurora

Centennial, Colorado, United States
$30.00 - $45.00
Running
5K 10K Half-Marathon 1.6K +2
Bigfoot Half Marathon logo
Apr
24

Bigfoot Half Marathon

Estes Park, Colorado, United States
$45.00 - $120.00
Running
Half-Marathon 5K
All-Out Beat the Heat logo
Apr
24

All-Out Beat the Heat

Westminster, Colorado, United States
$20.00 - $65.00
Running
Half-Marathon 10K 5K +2
Unicorn 5k (Denver-East) logo
Apr
25

Unicorn 5k (Denver-East)

Denver, Colorado, United States
$15.00 - $36.00
Running
5K 3.2K
The Colorado Marathon logo
May
02

The Colorado Marathon

Fort Collins, Colorado, United States
Running
Marathon Half-Marathon 5K 10K
RoC & Roll 5K: Run, Walk, or Wheel
Aug
07

RoC & Roll 5K: Run, Walk, or Wheel

Fountain, Colorado, United States
Running
5K
Clear for Takeoff Virtual 5K logo
Jul
20

Clear for Takeoff Virtual 5K

Colorado Springs, Colorado, United States
Running
5K
One Is Too Many: Veteran Suicide Awareness 5k and Kids Run logo
Jul
19

One Is Too Many: Veteran Suicide Awareness 5k and Kids Run

Greeley, Colorado, United States
Running
5K 1.6K
Toni's Trot 5K logo
Jul
18

Toni's Trot 5K

La Salle, Colorado, United States
Running
5K
Summer Splash Prairie Dog Half, 10k, & 5k logo
Jul
18

Summer Splash Prairie Dog Half, 10k, & 5k

Castle Rock, Colorado, United States
Running
Half-Marathon 10K 5K
CU Anschutz Run Club 5K logo
Jul
18

CU Anschutz Run Club 5K

Aurora, Colorado, United States
Running
5K
49th Annual Manassa Pioneer Days 5K Run logo
Jul
18

49th Annual Manassa Pioneer Days 5K Run

Manassa, Colorado, United States
Running
5K