Chicago 11 Hour Endurance Run
Willow Springs, United States • 17 May 2025
The Chicago 7-11 Hour Endurance Run, held at Wolf Road Woods in Willow Springs, IL, is a unique trail running event blending endurance with camaraderie and fun. Participants choose between 7- or 11-hour races on a 4-mile loop featuring single-track trails through restored forests, double-track paths in historic Palos Preserves, rolling hills, and runnable sections suitable for all skill levels. The course offers special Chicago highlights like views of the world’s first nuclear reactor site and scenic ponds. The event features the famous 7/11 aid station with quirky snacks including gourmet hot dogs and Pixie Sticks. Professional timing ensures accurate lap counts, making this a spirited celebration of trail running and community. Visit the organization's website for the most recent information.