Great Western Half-Marathon & 10K

Childish Nonsense is a whimsical running event taking place at Deer Grove Forest Preserve in Palatine, IL, featuring multiple race distances: 50 Miler, 50K, 25K, and 10K. The course consists of wide paths, making it accessible for participants of all levels. The event aims to foster a sense of commu..

The Earth Day 50K/15 Mile/5 Mile event, taking place in Crystal Lake, IL, offers participants a choice of three challenging race distances. Set in a scenic environment, the course features rolling hills and single-track trails, designed to provide an exhilarating experience for runners. The event pr..

The F^3 Cap Sauers Trail Marathon & 10 Mile is set to take place in Palos Hills, IL, on May 10, 2025. This event features a challenging marathon and a 10-mile race, both traversing the scenic Cap Sauers Holding Nature Preserve, the largest undeveloped area in Cook County. Participants will experienc..

The Chicago Yeti 7-11 Hour Endurance Run is a unique trail running event that combines endurance, camaraderie, and a fun atmosphere. Set in Willow Springs, Illinois, participants can choose between 7-hour and 11-hour challenges on a scenic 4-mile loop through the Palos Preserves. The course features..

The Naperville Trails Half Marathon & 10K is a scenic running event taking place in Wheaton, Illinois, on September 6, 2025. Participants can choose between a half marathon and a newly introduced 10K distance, both of which traverse the beautiful crushed limestone trails of the Danada Forest Preserv..

The Fancy Nonsense 25K/50K is a whimsical running event designed to bring joy and laughter to participants while challenging their physical and mental limits. Set in the scenic Palos Trail System near Chicago, the race features a 5.5-mile loop course primarily on single track trails. Runners can enj..