Unparalleled natural beauty? Check. Welcoming towns with friendly people? Check. Unique historical sites and a smooth, easy riding surface? Check, check. The 32-mile Allegheny River Trailin northwestern Pennsylvania seemingly has it all for a perfect getaway. And it's on the cusp of being even better; peak fall colors are expected to arrive in early to mid-October; the trail, lined with oaks, maples, elms and other tree varieties will be spectacular.