Half Marathon races in Colorado
Find the list of upcoming Half Marathon races in Colorado races below.
102 races found
Search filter
Is Registration Open?
Race Date Range
States
Cities
Related Searches
All Race Distances
Sort by
The Steamboat Marathon
All-Out Summer Breeze
Red, White and Brew 5k, 10k & Half Marathon
Sloth Run 5K/10K/13.1 DENVER/AURORA
Run Juneteenth Day 5K/10K/13.1 DENVER/AURORA
Slacker Half Marathon-Relay-4-Mile Races
Race in the Clouds – Alma Dirt Festival 2026
Run for Chocolate 5K/10K/13.1 DENVER/AURORA
July 4th Run 5K/10K/13.1 DENVER/AURORA
All-Out Dog Days
Heatwave Half Marathon – Denver
Heatwave Half Marathon – Colorado Springs
Summer Splash Prairie Dog Half, 10k, & 5k
Run for Coffee Lovers 5K/10K/13.1 DENVER/AURORA
Run for Donuts 5K/10K/13.1 DENVER/AURORA
Aspen Valley Marathon
Bound for Boston Marathon & Half Marathon – Denver
All-Out Runapalooza
Run for PB& J 5K/10K/13.1 DENVER/AURORA
