Pennsylvania's Mid-State Trail is a 513 km (319 mile) hiking trail traversing the entire state from Tioga in the north to Everett in the south. There is a route relationfor the trail.
Most of the trail has not yet been mapped. Most of the currently mapped components are in the Rothrock State Forest and Bald Eagle State Forest areas. An import from this source would be possible, although going out there and actually hiking the trail is of course preferred!