Running Races in Colorado — 2026

There are 347 running races in Colorado in 2026 across 96 cities. The next upcoming race is the 14er Challenge in Buena Vista on July 23. Popular distances include 5K races, half marathons, trail runs.

Browse by City

Colorado Springs 122 Denver 68 Centennial 50 Fort Collins 41 Littleton 32 Boulder 24 Loveland 20 Aurora 19 Arvada 19 Pueblo 19 Westminster 16 Thornton 14 Steamboat Springs 13 Durango 12 Buena Vista 11 Highlands Ranch 10 Golden 10 Louisville 9 Windsor 9 Parker 9 Bellvue 8 Greeley 8 Aspen 8 Longmont 7 Grand Junction 7 Canon City 6 Ridgway 6 Crested Butte 6 Lakewood 6 Brighton 6

CEROX + IRON

Sat, Jul 25 · Frederick, CO Frederick
Cerox Iron Teams of 2Cerox Iron IndividualCerox Teams of 2 +1
From $45 Open Closing Soon
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Wild West Relay

Fri, Jul 31 · Fort Collins, CO Fort Collins
Wild West Relay - Get Your Ass Over the Pass - Super Ultra team (1-3 runners)Wild West Relay - Get Your Ass Over the Pass - 12 person team (7-12 runners)Wild West Relay - Get Your Ass Over the Pass - High School Team +1
From $660 Open Closing Soon
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STEPS TO EMPOWER

Sat, Aug 1 · Colorado Springs, CO Colorado Springs
Virtual Steps to Empower 1 Mile Walk/RunVIRTUAL Steps to EmpowerSteps to Empower 5K Walk/Run
From $25 Open Closing Soon
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Pat's Pony Express

Sat, Aug 8 · Woodland Park, CO Woodland Park
Trail Pat's Pony Express - 8 MilePat's Pony Express - 16 Mile
From $65 Open Closing Soon 75 spots left
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