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

Jul

20

Clear for Takeoff Virtual 5K

Colorado Springs, Colorado, United States

Running

5K

Jul

19

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

Greeley, Colorado, United States

Running

5K 1.6K

Jul

18

CU Anschutz Run Club 5K

Aurora, Colorado, United States

Running

5K

Jul

18

49th Annual Manassa Pioneer Days 5K Run

Manassa, Colorado, United States

Running

5K

Jul

18

Festival in the Clouds Firefighter 5K, Fun Run and Doggie Dash

Alma, Colorado, United States

Running

5K

Jul

18

Spring Creek Memorial Trail Run

Steamboat Springs, Colorado, United States

Running

15.3K 5K

Jul

18

Toni's Trot 5K

La Salle, Colorado, United States

Running

5K

Jul

18

Heritage Eagles 5K

Littleton, Colorado, United States

Running

5K

Jul

18

2026 OCA Colorado 5K Panda Run

Denver, Colorado, United States

Running Walking

5K 1K

Jul

16

PNAAF 5K Wellness Challenge

Colorado Springs, Colorado, United States

Running

5K

Jul

12

Heatwave Half Marathon - Colorado Springs

Colorado Springs, Colorado, United States

Running

1.6K 5K 10K Half-Marathon +1

Jul

11

Heatwave Half Marathon - Denver

Littleton, Colorado, United States

Running

1.6K 5K 10K Half-Marathon +1