The Tunnel Hill State Trail is a state park in Vienna, Illinois. It is actually a bicycle trail that runs through four counties and is 45 miles long.

The Tunnel Hill State Trail traces its roots back to the times when it was still used for a part of the Cairo and Vincennes Railroad. It was used from the post Civil War years and up until the operations of the Southern Railway was shut down in the late 1900s. The tracks were later removed, leaving a clear trail. It goes through 23 trestle bridges, several ghost towns, a tunnel, a beautiful park, a remarkable corridor, and a trailhead in Vienna Station. It also connects to several other trails including the American Discovery Trail, US Bicycle Route 76, River to River Trail, and the Trail of Tears National Historic Trail.