Tunnel Hill 100 & 50 Mile Runs

The Tunnel Hill 100 & 50 Mile Runs take place in Vienna, Illinois, on the scenic Tunnel Hill State Trail, a smooth crushed limestone rails-to-trails path featuring gentle 2% grades, iconic trestles, and a historic tunnel. The event offers 100-mile and 50-mile distances, both USATF-sanctioned and IAU Golden Label certified, with a 30-hour time limit. The course is fast and flat, ideal for first-time 100-milers and record attempts, with multiple world records set here.

Aid stations provide varied nutrition, and pacers are allowed under specific rules. The race also hosts the USATF 50-mile National Championship and serves as a qualifier for Western States and UTMB. Amenities include camping, lodging nearby, and generous prize money. Visit the organization's website for the most recent information.