Approximately 4,000 miles of Bike, Hike, Horse and Mountain Bike Trails crossing Indiana alphabetically listed, numbered and indexed for an easy way to find your trail. USBR #35; #36; #50 routes. Suitable and Moderately Suitable roads determined to lessen the possibility of accidents to the bicyclists who want to travel through the State. The Indiana portion of the American Discovery Trail. Passenger train routes, bus and train station locations.