5K Races in Colorado 2026 | Upcoming Races & Dates | My Next Race

There are 258 5K races in Colorado scheduled for 2026. The next is the 6th Annual Skidola: Telluride's Winter Uphill Race in Telluride on March 13. Colorado 5K races run primarily March through February.

Onesie Dash

Sat, Dec 5 · Red Feather Lakes, CO Red Feather Lakes

Onesie Dash

From $35 Open

Candy Cane Course - Denver

Sun, Dec 6 · Westminster, CO Westminster

1 Mile5k10k +4

From $22 Open 5 spots left

RMRR December Trophy Series

Sun, Dec 6 · Denver, CO Denver

4.5 mi

From $10 Open

Santa Catch 5k & 10k

Sat, Dec 12 · Windsor, CO Windsor

1 Mile Kids Fun RunSanta Catch 5KSanta Catch 10k

From $15 Open

WinterFest 5k & Fun Run

Sat, Dec 12 · Thornton, CO Thornton

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

From $12 Open

Santa's Dash for Ca$h

Sat, Dec 19 · Denver, CO Denver

5k

From $29 Open

Ugly Sweater 5K

Sun, Dec 20 · Denver, CO Denver

5KVirtual 5K

From $30 Open

Resolution Run - Fort Collins

Thu, Dec 31 · Fort Collins, CO Fort Collins

5K

From $25 Closed

Resolute Runner 5k

Fri, Jan 1 · Arvada, CO Arvada

5k

From $29 Open

All-Out Polar Prowl

Sat, Jan 9 · Arvada, CO Arvada

5KVIRTUAL 5K10K +3

From $25 Open

All-Out Mardi Crawl

Sat, Feb 6 · Arvada, CO Arvada

5K5KVIRTUAL 5K +9

From $25 Open

Heart Throb 5k

Sat, Feb 13 · Arvada, CO Arvada

5k

From $25 Open