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

2026 Mother's Day Virtual 5k - Pueblo

Pueblo, Colorado, United States

May 9, 2026 (Sat) – May 11, 2026

Running

5K

2026 Mother's Day Virtual 5k - Thornton

Thornton, Colorado, United States

May 9, 2026 (Sat) – May 11, 2026

Running

5K

10th Annual Fort Collin's Mother's Day 5K

Fort Collins, Colorado, United States

May 9, 2026 (Sat)

Running

5K

2026 Five Star 5K, Mile of Smiles, and Wellness Festival

Brighton, Colorado, United States

May 9, 2026 (Sat)

Running

5K 1.6K

Hometown Half Marathon & 5k/10k - Colorado Springs

Colorado Springs, Colorado, United States

May 9, 2026 (Sat)

Running

5K 10K Half-Marathon 1.6K +2

Kadet Football 5K

Colorado Springs, Colorado, United States

May 9, 2026 (Sat)

Running

5K

2026 Mother's Day Virtual 5k - Colorado Springs

Colorado Springs, Colorado, United States

May 9, 2026 (Sat) – May 11, 2026

Running

5K

2026 Altitude Elementary Moose Mudder

Aurora, Colorado, United States

May 3, 2026 (Sun)

Running

1K 5K

RMRR May Trophy Series

Denver, Colorado, United States

May 3, 2026 (Sun)

Running

8K 5K

Hayden Cog Run

Hayden, Colorado, United States

May 3, 2026 (Sun)

Running

13.5K 5K

Water Wells for Africa 5k Walk/Run

Silt, Colorado, United States

May 3, 2026 (Sun)

Running

5K

Emerge 5K

Boulder, Colorado, United States

May 3, 2026 (Sun)

Running

5K