May
23
Saturday

Frontline OCR

Website Registration

Frontline OCR is an obstacle course race held at Byron Motosports Park in Byron, Illinois, dedicated to honoring military personnel, veterans, and first responders. The event challenges participants with purpose-built obstacles that simulate the physical and mental demands faced on the frontline, emphasizing courage, resilience, and readiness. It offers various race options including competitive and non-competitive 10K runs, a 5K, endurance and special forces challenges, a ruck division, and a kids' course.

The race fosters camaraderie and teamwork as participants push through mud, walls, and other obstacles, making it a unique test of grit and determination in a supportive atmosphere. Visit the organization's website for the most recent information.

Always double-check with the organizer's website – things can change, and we might have sprinted past a few details! This page may contain affiliate links.
10 km
Heroes 1 - Competitive 10k
10 km
Heroes 2 - Non-Competitive 10k
10 km
Open 10k Waves
5 km
9:45 Am Open 5k
Endurance
Kid's Course
Ruck Division
Special Forces

Events nearby

Tough Mudder Chicago takes place at Rockford International Airport, about an hour from downtown Chicago, on August 29–30, 2026. The weekend features 5K, 15K, and the 8-hour Infinity challenge, with 20..