Race Discovery

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

513 events found

Fleet Feet Colorado Springs Halloween Fun Run logo
Oct
30

Fleet Feet Colorado Springs Halloween Fun Run

Colorado Springs, Colorado, United States
Free
Running
5K
Halloween 5K Fundraiser! logo
Oct
31

Halloween 5K Fundraiser!

Grand Junction, Colorado, United States
Free
Running
5K
Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA logo
Oct
31

Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States
$30.00 - $45.00
Running
5K 10K Half-Marathon 1.6K +2
I Ain't Scared (of 5k) logo
Oct
31

I Ain't Scared (of 5k)

Thornton, Colorado, United States
$50.00
Running
5K
Woodmen Hills Monster Mash 5k and Beer Run
Oct
31

Woodmen Hills Monster Mash 5k and Beer Run

Peyton, Colorado, United States
Running
5K
PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA logo
Oct
31

PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States
$30.00 - $45.00
Running
5K 10K Half-Marathon 1.6K +2
Colleen De Reuck XC Classic logo
Oct
31

Colleen De Reuck XC Classic

Boulder, Colorado, United States
$15.00 - $25.00
Running
5K 3K 1K
Foundry Halloween 5k logo
Oct
31

Foundry Halloween 5k

Steamboat Springs, Colorado, United States
$30.75
Running
5K
Halloween Fun Run 5k & 1mile - Zombie Theme logo
Oct
31

Halloween Fun Run 5k & 1mile - Zombie Theme

Idaho Springs, Colorado, United States
$20.00
Running
5K 1.6K
Spooky Sprint - Colorado Springs logo
Oct
31

Spooky Sprint - Colorado Springs

Colorado Springs, Colorado, United States
$22.00 - $42.00
Running
1.6K 5K 10K
All-Out Kooky-Spooky logo
Nov
01

All-Out Kooky-Spooky

Golden, Colorado, United States
$40.00 - $85.00
Running
Half-Marathon 10K 5K +2
Fossil Creek Park T&H 5K logo
Nov
01

Fossil Creek Park T&H 5K

Fort Collins, Colorado, United States
Free
Running
5K