Half Marathon Races in Colorado.

Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA

Steamworks Half Marathon

SuperHeroes Run 5K/10K/13.1 DENVER/AURORA

Colorado 13er (Half Marathon/10k/5k)

Red, White and Brew 5k, 10k & Half Marathon

Run Juneteenth Day 5K/10K/13.1 DENVER/AURORA

Sloth Run 5K/10K/13.1 DENVER/AURORA

Slacker Half Marathon-Relay-4-Mile Races

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

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

Heatwave Half Marathon - Denver

Heatwave Half Marathon - Colorado Springs

Run for Coffee Lovers 5K/10K/13.1 DENVER/AURORA

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

Bound for Boston Marathon & Half Marathon - Denver

Bagel Run 5K/10K/13.1 DENVER/AURORA

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

Byers Peak Stampede Half Marathon & 5K Run

Staunton Rocks! Marathon and Half Marathon

Sloth Run 5K/10K/13.1 DENVER/AURORA

TBK Bank Thirsty 13 Half Marathon

Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA

Golden Harvest Half Marathon & 5k/10k - Denver

Golden Harvest Half Marathon & 5k/10k - Colorado Springs

Labor Day Half Marathon

Run for Mental Health 5K/10K/13.1 DENVER/AURORA

National Chocolate Day: Run for Chocolates 5K/10K/13.1 DENVER/AURORA

Black Squirrel Half Marathon

Trail Sisters Women's Half Marathon & 10k

Oktoberfest Run 5K/10K/13.1 DENVER/AURORA

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

Running for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - Colorado

Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon

Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run

Bagel Run 5K/10K/13.1 DENVER/AURORA

Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA

Blue Sky Trail Marathon & Half Marathon

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

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

HRCA Backcountry Wilderness Half Marathon

Run for Mental Health 5K/10K/13.1 DENVER/AURORA

Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORA

TURKEY TREK (13.1, 10k, 5k & 2k)

Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA

Thanksgiving Gobble Trot Run 5K/10K/13.1 DENVER/AURORA

Rock Canyon Half Marathon- 40th Anniversary Run!

Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA

A Merry Christmas Run 5K/10K/13.1 DENVER/AURORA