Race Calendar in Colorado, United States

Sep

12

For The City Network 5K

Greeley, Colorado, United States

$45.00

Running

5K

Sep

12

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

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Sep

12

Spirit of the Valley 5k

Grand Junction, Colorado, United States

$10.00 - $35.00

Running

5K 1K

Sep

12

Jungle Dash

Loveland, Colorado, United States

$5.00 - $15.00

Running

1.6K Mini's Jungle Dash

Sep

12

Run4Hope 5K for Schools

Monument, Colorado, United States

$30.00 - $75.00

Running

5K 3.2K

Sep

12

Steele Trap Trail Run

Loma, Colorado, United States

Running

Marathon

Sep

12

Black Squirrel Half Marathon

Bellvue, Colorado, United States

$110.00

Running

Half-Marathon

Sep

12

Rampart Rager Gravel

Colorado Springs, Colorado, United States

$59.00

Gravel biking

Ultra

Sep

12

2026 Lake Nighthorse Triathlon - Sprint and Olympic

Durango, Colorado, United States

$105.00 - $150.00

Triathlon

25.8K Ultra +1

Sep

13

FalconTri

U S A F Academy, Colorado, United States

$15.00 - $65.00

Triathlon

Cadet Men Cadet Women Collegiate Men Triathlon Collegiate Women Triathlon +2

Sep

13

Buffalo Bicycle Classic

Boulder, Colorado, United States

$150.00 - $200.00

Cycling Gravel biking

Ultra 22.5K +5

Sep

13

RMRR September Trophy Series

Thornton, Colorado, United States

$10.00

Running

10K 5K