Race Calendar in Colorado, United States

Parker Parks and Recreation Dash Across the Dam Father’s Day 5K

Parker, Colorado, United States

20 Jun, 2026 (Sat)

$40.00

Running

5K

Red, White and Brew 5k, 10k & Half Marathon

Windsor, Colorado, United States

20 Jun, 2026 (Sat)

$15.00 - $90.00

Running

5K 10K Half-Marathon 1.6K +2

Mustang Mile 2026

Kremmling, Colorado, United States

20 Jun, 2026 (Sat)

$30.00

Running

1.6K

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

Fatherhood 5k Family Run/Walk

Colorado Springs, Colorado, United States

20 Jun, 2026 (Sat)

$15.00 - $90.00

Running

5K

Run for the River 5k Boulder

Boulder, Colorado, United States

20 Jun, 2026 (Sat)

$25.00

Running

5K

Unicorn 5k (North)

Thornton, Colorado, United States

20 Jun, 2026 (Sat)

$20.00 - $46.00

Running

5K 1K

Havoc at HartFit OCR 3k

Peyton, Colorado, United States

20 Jun, 2026 (Sat)

$29.99 - $59.99

Obstacle race

3K 1.6K

Sierra's 5K Run/Walk Race Against Meningitis

Loveland, Colorado, United States

20 Jun, 2026 (Sat)

$30.00

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

Strawberry Shortcut

Glenwood Springs, Colorado, United States

21 Jun, 2026 (Sun)

$25.00 - $40.00

Running

10K 5K 1.6K

Sunset Trail Running Festival

Boulder, Colorado, United States

21 Jun, 2026 (Sun)

$20.00 - $75.00

Trail running

28K 12K 5K 1K