5K Races in Thornton, Colorado 2026 — MyNextRace | My Next Race

There are 6 5K races in Thornton, Colorado in 2026. The next is the Treat Trot Denver on June 13.

Treat Trot Denver

Sat, Jun 13 · Thornton, CO Thornton

Virtual 5K10K15K +4

From $17 Open Closing Soon

Unicorn 5k (North)

Sat, Jun 20 · Thornton, CO Thornton

Road 1/2 (ish) Mile Saunter - untimed5k Run/Walk

From $16 Open

Summer Sizzler- Denver

Sat, Aug 8 · Thornton, CO Thornton

Virtual 1 Mile5k10k +4

From $17 Open 5 spots left

RMRR September Trophy Series

Sun, Sep 13 · Thornton, CO Thornton

Road 5k10k

From $10 Open

I Ain't Scared (of 5k)

Sat, Oct 31 · Thornton, CO Thornton

Road 5k

From $29 Open

WinterFest 5k & Fun Run

Sat, Dec 12 · Thornton, CO Thornton

Road 5k Run/Walk -TIMED and ScoredFun Run/Walk (Untimed, approx .75 miles)

From $12 Open