Illinois
Illinois Obstacle Race Calendar 2025-2026
Explore the best obstacle runs in Illinois for 2025-2026! Our updated list features 6 exciting races across the region. Find your next race in Illinois below and join the running community at these great events!
May 2026
Run by torchlight through illuminated obstacles and rugged rigs at the Dark Ages Night Obstacle Race in McHenry. Enjoy bonfires, live entertainment and a finisher medal and shirt after a thrilling night of archery and heavy carries.
Frontline OCR at Byron Motorsports Park on May 23, 2026 invites teams and individuals to tackle purpose built obstacles that honor military, veterans and first responders. Race options include a kids course, 5K, 10K plus ruck and competitive division..
July 2026
Take on Savage Race Chicago on July 11, 2026 in Spring Grove IL, a 5 to 7 mile obstacle course with mud, fire and barbed wire. Compete solo or with a team, and bring kids for Savage JR or pick up a spectator pass.
August 2026
Challenge yourself at the Highlander Assault Obstacle Race in McHenry on August 15, 2026, an award winning OCR with 3k family, 5k and 15k options and day and night formats. Expect rugged obstacles, festival vibes and medals for finishers.
Tough Mudder Chicago on August 29 and 30, 2026 at Rockford International Airport mixes muddy obstacles across fields, trails and creek crossings with a lively Mudder Village offering food, live music and a finisher beverage. Race options include 5K,..
September 2026
Push your limits at The Ultimate SUCK, a 15th anniversary endurance challenge at Decker Farm with 36, 12, and 4 hour options blending trail running and surprise farm style tasks. Expect grit, mud, and unforgettable camaraderie.
