
Tunnel Hill 100
The Tunnel Hill 100 is a world-class ultramarathon held on a flat and fast rail-trail in Southern Illinois, famous for its historic tunnel and record-breaking course. Course Highlights The Tunnel Hill 100 is staged on the magnificent Tunnel Hill State Trail, a premier rail-trail that winds through the heart of Southern Illinois and the Shawnee National Forest. The course is renowned among ultrarunners for being exceptionally flat and fast, featuring a finely crushed limestone surface that is easy on the […]
























