The Greenbrier River Trail is a lengthy rails-to-trails route that winds its ways along the banks of the eponymous rivers for 78 miles. This incredible route offers a fantastic point-to-point bike ride or an even more epic out-and-back route. Some riders might even choose to turn this into a multi-day ride, thanks to the campsites situated along the trail, although fit riders can undoubtedly complete it in a single day.