Tunnel Hill 100 & 50 Mile Runs

The Tunnel Hill 100 & 50 Mile Runs, held in Vienna, Illinois, is a premier ultramarathon event featuring both 100-mile and 50-mile races. The course, renowned for its smooth, crushed limestone trail, offers a scenic route through the Tunnel Hill State Trail, including iconic tunnels and picturesque landscapes. The event has gained recognition for its competitive atmosphere, with several world records set by elite runners.

In 2025, the 50-mile race will serve as the USATF National Championship, attracting top athletes. Participants can expect well-stocked aid stations, a supportive community, and opportunities for personal bests in a fast, flat environment. Visit the organization's website for the most recent information.