Illinois
Illinois Obstacle Race Calendar 2026-2027
Monthly updates for Illinois
Get new running races (and updates) in your inbox every month.
Explore the best obstacle runs in Illinois for 2026-2027! Our updated list features 7 exciting races across the region. Find your next race in Illinois below and join the running community at these great events!
August 2026
Tough Mudder Chicago on August 29, 2026 at Richardson Adventure Farm offers 5K, 15K and an 8 hour Infinity course with multiple obstacles and a Mudder Village.
September 2026
Test your limits at Decker Farm with a grueling combination of military boot camp and farm chores. Choose between 4, 12, or 36 hour endurance challenges featuring heavy carries and undisclosed physical tasks.
Obstacle-course event at The Cliffs Insane Terrain Park in Marseilles IL with 5K and 10K races, ruck divisions, a multi-lap Bearded Challenge, kids course and age-group awards.
Timed 2 mile obstacle course at Richland Community College to raise awareness and funds for veteran suicide prevention, featuring 20 to 25 obstacles and finisher rewards.
May 2027
Nighttime obstacle race in Pingree Grove, IL with multiple 5K heats and a 30K unlimited laps option, illuminated obstacles, live entertainment, and onsite parking.
Monthly updates for Illinois
Get new running races (and updates) in your inbox every month.
An obstacle course event at Byron Motosports Park on May 22, 2027 offering 10K and 5K waves, Special Forces, Ruck division and a kids course, produced by a nonprofit honoring service members.
August 2027