Find Events Find Results Frontline OCR Saturday, May 24, 2025 Byron, Illinois Race Distances : 5 Mile Race Types Tags:Obstacle Course Event Details Join us at the Frontline OCR in Byron, Illinois for a great event. Races: 5 Mile. For additional event information (such as race start times, race course descriptions, race maps, race awards, race reviews, race registration, and other runner essentials), please visit the Frontline OCR event website. Location Byron, IL Similar Events and Races Events By Race Distance: 5 Mile Notice: Despite our best efforts, please note that race details can change at any time, and we may make a mistake. ALWAYS visit the event's website for the most complete and current race information.