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

Unicorn 5k (Denver-East)

Denver, Colorado, United States

25 Apr, 2027 (Sun)

$15.00 - $36.00

Running

5K 3.2K

The Colorado Marathon

Fort Collins, Colorado, United States

02 May, 2027 (Sun)

Running

Marathon Half-Marathon 5K 10K

The Big Run Presented By Brooks

Colorado Springs, Colorado, United States

02 Jun, 2026 (Tue) – 03 Jun, 2026

Running

5K 4.8K

Endorphins for Orphans Virtual 5K

Colorado Springs, Colorado, United States

01 Jun, 2026 (Mon) – 07 Sep, 2026

$75.00

Running

5K

Love Hard 5k Fun Run

Denver, Colorado, United States

01 Jun, 2026 (Mon) – 30 Jun, 2026

$35.00

Running

5K +4

Mile High Rescue Sixth annual 5K! Running for Rescues! & Summer Kick Off Party

Englewood, Colorado, United States

31 May, 2026 (Sun)

Running

5K 1.6K +2

DRMABPsi 1–5K Walk, Run & Roll

Denver, Colorado, United States

30 May, 2026 (Sat)

Running

5K 4K 3K 2K +2

36th Annual Fire Hydrant 5K & Expo

Fort Collins, Colorado, United States

30 May, 2026 (Sat)

Running

5K

Dash4Hope 2026

Greeley, Colorado, United States

30 May, 2026 (Sat)

Running

5K

Trinidad Wellness Festival 5K

Trinidad, Colorado, United States

30 May, 2026 (Sat)

Running

5K

2026 MTHCF 5K

Fruita, Colorado, United States

30 May, 2026 (Sat)

Running

5.1K

Angelman Syndrome 5K

Colorado Springs, Colorado, United States

30 May, 2026 (Sat)

Running

5K