Running Race Calendar in Colorado, United States

2026 Mother's Day Virtual 5k - Lakewood

Lakewood, Colorado, United States

09 May, 2026 (Sat) – 11 May, 2026

Running

5K

2026 Mother's Day Virtual 5k - Pueblo

Pueblo, Colorado, United States

09 May, 2026 (Sat) – 11 May, 2026

Running

5K

2026 Mother's Day Virtual 5k - Thornton

Thornton, Colorado, United States

09 May, 2026 (Sat) – 11 May, 2026

Running

5K

2026 Mother's Day Virtual 5k - Arvada

Arvada, Colorado, United States

09 May, 2026 (Sat) – 11 May, 2026

Running

5K

Mitchell Mile

Golden, Colorado, United States

08 May, 2026 (Fri)

Running

1.6K

Longmont Half & 5k (LM Half)

Longmont, Colorado, United States

03 May, 2026 (Sun)

Running

Half-Marathon 5K

2026 Altitude Elementary Moose Mudder

Aurora, Colorado, United States

03 May, 2026 (Sun)

Running

1K 5K

Water Wells for Africa 5k Walk/Run

Silt, Colorado, United States

03 May, 2026 (Sun)

Running

5K

Emerge 5K

Boulder, Colorado, United States

03 May, 2026 (Sun)

Running

5K

RMRR May Trophy Series

Denver, Colorado, United States

03 May, 2026 (Sun)

Running

8K 5K

Hayden Cog Run

Hayden, Colorado, United States

03 May, 2026 (Sun)

Running

13.5K 5K

Frank Shorter Track Classic

Longmont, Colorado, United States

03 May, 2026 (Sun)

Running

1.6K