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

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

Jul

09

BRR All-Comers Summer Track & Field Series #3

Boulder, Colorado, United States

Running

Ultra 1.6K 5K +1

Jul

04

Burro Buster 5k

Fairplay, Colorado, United States

Running

5K

Jul

04

Pueblo's Firecracker 5k!

Pueblo, Colorado, United States

Running

5K

Jul

04

Run for Chocolate 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

Jul

04

July 4th Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

Jul

04

Loveland Liberty 5K

Loveland, Colorado, United States

Running

5K

Jul

04

HRCA Independence Day 5K

Littleton, Colorado, United States

Running

5K

Jul

04

FireKracker 5k

Fort Collins, Colorado, United States

Running

5K 1.6K

Jul

04

40th Annual Boogie's Buddy Race, Presented By Aspen Valley Health

Aspen, Colorado, United States

Running

8K 5K 1.6K