Running Race Calendar in Colorado, United States

Sierra's 5K Run/Walk Race Against Meningitis

Loveland, Colorado, United States

20 Jun, 2026 (Sat)

$30.00

Running

5K

Sloth Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

20 Jun, 2026 (Sat) – 29 Aug, 2026

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Run Juneteenth Day 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

20 Jun, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Unicorn 5k (North)

Thornton, Colorado, United States

20 Jun, 2026 (Sat)

$24.00 - $51.00

Running

5K 1K

Mustang Mile 2026

Kremmling, Colorado, United States

20 Jun, 2026 (Sat)

$30.00

Running

1.6K

Run for the River 5k Boulder

Boulder, Colorado, United States

20 Jun, 2026 (Sat)

$25.00

Running

5K

Father's Day Classic 10k, 5k, & 1 Mile

Arvada, Colorado, United States

21 Jun, 2026 (Sun)

$10.00 - $45.00

Running

10K 5K 1.6K +2

Virtual 14th Annual Buffs4Life Kyle MacIntosh Memorial 5K Run/Walk

Boulder, Colorado, United States

21 Jun, 2026 (Sun)

$30.00

Running

5K

Juneteenth Fun Run 5K

Denver, Colorado, United States

21 Jun, 2026 (Sun)

$25.00 - $45.00

Running

5K

14th Annual Buffs4Life Kyle MacIntosh Memorial 5K Run/Walk

Boulder, Colorado, United States

21 Jun, 2026 (Sun)

$30.00

Running

5K

Strawberry Shortcut

Glenwood Springs, Colorado, United States

21 Jun, 2026 (Sun)

$30.00 - $45.00

Running

10K 5K 1.6K

The Red Schoolhouse Run

Louisville, Colorado, United States

23 Jun, 2026 (Tue)

$30.00

Running

5K