The Greenbrier River Trail is a 78-mile former railroad used for hiking, biking and horseback riding, and is the longest trail of its kind in West Virginia. It begins at Caldwell and passes through small towns, crosses 35 bridges and runs through some of the state's most remote areas. The address and phone are those of Watoga State Park, which manages the trail. The trail is open 6 a.m. to 10 p.m.