Race Calendar in Colorado, United States near Thornton

Treat Trot - Denver

Thornton, Colorado, United States

13 Jun, 2026 (Sat)

$22.00 - $40.00

Running

1.6K 5K 10K 15K

Unicorn 5k (North)

Thornton, Colorado, United States

20 Jun, 2026 (Sat)

$20.00 - $46.00

Running

5K 1K

Summer Sizzler- Denver

Thornton, Colorado, United States

08 Aug, 2026 (Sat)

$22.00 - $36.00

Running

1.6K 5K 10K 15K

RMRR September Trophy Series

Thornton, Colorado, United States

13 Sep, 2026 (Sun)

$10.00

Running

10K 5K

I Can 5k

Thornton, Colorado, United States

03 Oct, 2026 (Sat)

Free

Running

5K +2

I Ain't Scared (of 5k)

Thornton, Colorado, United States

31 Oct, 2026 (Sat)

$40.00

Running

5K

WinterFest 5k & Fun Run

Thornton, Colorado, United States

12 Dec, 2026 (Sat)

$25.00

Running

5K