From the Great Western Trail at Leroy Oakes Forest Preserve’s starting line, the Great Western Half Marathon course takes runners along the winding park road to the Great Western Trail, leading runners to the finish line at St. Charles’s Leroy Oakes Forest Preserve. The mostly flat, asphalt course provides forest views along the way, along with support stations organized by the race.
Note: The course map above provides the approximate route for the race. Though every effort has been made to ensure its accuracy, changes are sometimes made to race routes due to weather conditions, road closures or other circumstances that can require a course to be changed. If you see an error above, email us here.