Race Calendar in Colorado, United States

2026 Dash & Dine 5k Run Series

Boulder, Colorado, United States

Apr 28, 2026 (Tue) – May 19, 2026

Running

5K

Alpine Autism Center 19th Annual "Run for the One" 5k Walk/Run

Colorado Springs, Colorado, United States

Apr 25, 2026 (Sat) – May 1, 2026

Running

5K

Healthy Kids Running Series Spring 2026 - Denver, CO

Denver, Colorado, United States

Apr 12, 2026 (Sun) – May 17, 2026

Running

6.4K 3.2K 1.6K

Prairie Dog Run Series

Louisville, Colorado, United States

Apr 12, 2026 (Sun) – Aug 23, 2026

Running

Half-Marathon

Healthy Kids Running Series Spring 2026 - Fort Collins, CO

Fort Collins, Colorado, United States

Apr 12, 2026 (Sun) – May 17, 2026

Running

6.4K 3.2K 1.6K

Healthy Kids Running Series Spring 2026 - Aurora, CO

Aurora, Colorado, United States

Apr 12, 2026 (Sun) – May 17, 2026

Running

6.4K 3.2K 1.6K

Garden Training Runs

Colorado Springs, Colorado, United States

Apr 7, 2026 (Tue) – Jun 11, 2026

Walk Run or Roll for Daniel

Colorado Springs, Colorado, United States

Apr 2, 2026 (Thu) – May 9, 2026

Cycling, Running

24.1K 5K

The Grand Traverse

Crested Butte, Colorado, United States

Mar 29, 2026 (Sun) – Sep 6, 2026

$220.00 - $388.00

Skiing, Triathlon, Running, Duathlon, Mountain biking

Ultra +1

Race Through Colorado 1M, 5K, 10K, 13.1, 26.2 - Now Only $20!

Denver, Colorado, United States

Mar 28, 2026 (Sat) – Dec 31, 2026

$20.00

Running

1.6K 5K 10K Half-Marathon +1

Mountain Lions Track Program

Boulder, Colorado, United States

Mar 23, 2026 (Mon) – Apr 30, 2026

Dogventure Photo Challenge

Niwot, Colorado, United States

Mar 1, 2026 (Sun) – Dec 31, 2029

$19.99

Running

1.6K