5K races in Colorado, United States — 2026 running calendar

Longmont Half & 5k (LM Half)

Longmont, Colorado, United States

May 3, 2026 (Sun)

Running

Half-Marathon 5K

High Line Canal 5K/10K Run

Centennial, Colorado, United States

May 2, 2026 (Sat)

Running

10K 5K

Take 5 in the Garden

Colorado Springs, Colorado, United States

May 2, 2026 (Sat)

Trail running, Running

15.3K 8K 5K

MayFest Fun Run

Parachute, Colorado, United States

May 2, 2026 (Sat)

Running

5.5K

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

CollaBEERation 5k & Brew Fest Party

Longmont, Colorado, United States

May 2, 2026 (Sat)

Running

5K

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

Sunrise Marathon 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

May 2, 2026 (Sat)

Running

5K 10K Half-Marathon 1.6K +2

DU Spring Sprint 5k

Gunnison, Colorado, United States

May 2, 2026 (Sat)

Running

5.1K

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

Walk Run or Roll for Daniel

Colorado Springs, Colorado, United States

Apr 2, 2026 (Thu) – May 9, 2026

Cycling, Running

24.1K 5K