The Grandaddy of them all, The Elroy Sparta Trail. The trail remains one of the most popular trails in the country. With three rock tunnels and five small towns along it's 32.5 mile route, the trail is a favorite Wisconsin bicycling destination. Traveling between Sparta and Elroy, the trail stretches through the communities of Norwalk, Wilton and Kendall. The Elroy Sparta Trail is the property of the State of Wisconsin and is part of it's State Trails System run by the Department of Natural Resources and supported by the Friends of the Elroy Sparta Trail. It is located in Hidden Valleys Country and passes through a portion of the unglaciated areas of Wisconsin exemplifying the natural beauty of our State. Part of the "Bike4Trails" it connects to 101 miles of trails.
The trail is 32 miles in length on the abandoned Chicago & North Western Railroad bed and passes through three rock tunnels. The three century-old railroad tunnels hightlight the trail. The Kendall and Wilton tunnels are 1/4 mile long and the Norwalk tunnel is just over 3/4 mile long. The tunnels are dark and cool, even on the brightest days, and water from springs above the tunnels can trickle onto the trail. Bikers should walk bikes through the tunnels. The Trail is covered with limestone screenings and provides a smooth riding surface. The bridges are covered with planks and are guarded with railings.