5K Races in Thornton, Colorado 2026 — MyNextRace

There are 5 5K races in Thornton, Colorado in 2026. The next is the Unicorn 5k (North) on June 20.

Sat, Jun 20 · Thornton, CO Thornton

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

From $16 Open Closing Soon

Sat, Aug 8 · Thornton, CO Thornton

Virtual 1 Mile5k10k +4

From $17 Open 5 spots left

Sun, Sep 13 · Thornton, CO Thornton

Road 5k10k

From $10 Open

Sat, Oct 31 · Thornton, CO Thornton

Road 5k

From $29 Open

Sat, Dec 12 · Thornton, CO Thornton

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

From $12 Open

5K Races in Thornton, Colorado