Running Race Calendar in Colorado, United States

DU Spring Sprint 5k

Gunnison, Colorado, United States

May 2, 2026 (Sat)

Running

5.1K

Cinco De Mayo Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

May 2, 2026 (Sat)

Running

5K 10K Half-Marathon 1.6K +2

Greenland Trail Races

Larkspur, Colorado, United States

May 2, 2026 (Sat)

Trail running, Running

Ultra 25K 12.9K 6.4K +2

Take 5 in the Garden

Colorado Springs, Colorado, United States

May 2, 2026 (Sat)

Trail running, Running

15.3K 8K 5K

Adams County Foster Care 5K Run/Walk and 1 mile fun run

Brighton, Colorado, United States

May 2, 2026 (Sat)

Running

5K 1.6K +1

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 - 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

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

Walk Run or Roll for Daniel

Colorado Springs, Colorado, United States

Apr 2, 2026 (Thu) – May 9, 2026

Cycling, Running

24.1K 5K