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!
September 2026
Midwest OCR in Marseilles IL offers 5K and 10K obstacle runs, a competitive 10K, ruck divisions, a kid course, team packages and finisher medals.
Timed two mile obstacle course at Richland Community College on September 19, 2026 supporting the college's Student Veterans Resource Center with 20 to 25 obstacles.
A family friendly 1 mile run or walk at Montessori School of Lemont with colorful water based sprays, a white event tshirt, and an eco friendly confetti pop.
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.
Monthly updates for Illinois
Get new running races (and updates) in your inbox every month.
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 on August 29, 2026 at Richardson Adventure Farm offers 5K, 15K and an 8 hour Infinity course with multiple obstacles and a Mudder Village.