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!
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.
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.
June 2027
A family-friendly mud run at Megacross on June 26, 2027 featuring obstacles, waist-deep mud pits, a pre-party, and Value and VIP registration options.
August 2027
A Scottish Highlander themed obstacle race in Pingree Grove on August 7, 2027 offering 50K, 15K, 5K, family 3K, a torch lit night run and a haunted 5K.
Tough Mudder Chicago is a weekend obstacle event at Richardson Adventure Farm on August 28 and 29, 2027 featuring 5K and 15K courses, Infinity laps, and on-site festival amenities.
Monthly updates for Illinois
Get new running races (and updates) in your inbox every month.
September 2027
Farm-based endurance and obstacle event at Decker Farm near Cuba, IL offering 36 hour, 12 hour and 4 hour formats with heavy gear requirements and restricted pacer access.
Obstacle course event in Marseilles IL on September 18 2027 featuring 3+ and 6+ mile courses, a multi lap challenge, ruck divisions and a kid's course.