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 crushed limestone rails-to-trails path featuring gentle grades and iconic landmarks like the historic tunnel. The event offers 100-mile and 50-mile distances, both USATF-sanctioned and IAU Golden Label certified, attracting elite and first-time ultrarunners alike. The course is fast and smooth, with minimal technical challenges and only one major road crossing.

Aid stations provide varied nutrition, and pacers are allowed under specific rules. The race is known for record-breaking performances, including multiple world records. It also serves as the USATF 50-mile National Championship and a qualifier for Western States and UTMB. Visit the organization's website for the most recent information.