Colorado
Colorado Obstacle Race Calendar 2026-2027
Monthly updates for Colorado
Get new running races (and updates) in your inbox every month.
Explore the best obstacle runs in Colorado for 2026-2027! Our updated list features 3 exciting races across the region. Find your next race in Colorado below and join the running community at these great events!
May 2027
Two days of Spartan obstacle races at Fort Carson on high elevation terrain, offering Sprint, Super, Beast, Ultra and kids race formats.
August 2027
An obstacle mud run at Colorado National Speedway on August 14, 2027, featuring up to 3 miles of muddy obstacles and standard and VIP registration options.
September 2027
Tough Mudder Colorado at Fort Carson on September 25, 2027 features 15K and 5K obstacle courses, spectator options, and group and volunteer programs.
Monthly updates for Colorado
Get new running races (and updates) in your inbox every month.