Colorado
Colorado Obstacle Race Calendar 2026-2027
Monthly updates for Colorado
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Explore the best obstacle runs in Colorado for 2026-2027! Our updated list features 7 exciting races across the region. Find your next race in Colorado below and join the running community at these great events!
May 2026
Multi-distance Spartan obstacle races at Fort Carson near the Rocky Mountains, featuring steep climbs, rugged trails and high elevation. Events range from a 5 km Sprint to a 50 km Ultra and include a kids race and an obstacle workshop.
June 2026
Muddy Dash in Denver is a 5K mud run at Colorado National Speedway on June 20, 2026, featuring obstacles, mud pits no deeper than waist level, a pre-party with music, and an after-party with food and beer. Family friendly with standard and VIP option..
Test your strength at this exclusive obstacle course event in Peyton featuring a three lap 3K race and a one mile kids run. Navigate rigs, rope climbs, and heavy carries in a small field of only fifty athletes.
Experience a half marathon in the mountains of Nederland Colorado. This event features a significant elevation gain of 4226 feet with the summit always in view.
August 2026
Summit Grays and Torreys Peaks in this 8.8 mile Colorado endurance event. Participants must carry a 20lb dry load while tackling 4,101 feet of elevation gain.
September 2026
A load bearing endurance event at Staunton State Park on September 5, 2026. Routes range from 6.5 to 21.5 miles with loads from 10 to 40 lb and proceeds benefit the Special Forces Foundation.
Tough Mudder Colorado at Fort Carson on September 26, 2026 features 15K and 5K courses with multiple muddy obstacles, a Mudder Village festival for spectators, and finisher items including medals, shirts, headbands and a complimentary drink.