Question: The Horse-Shoe Trail is a 140 mi trail that runs from the western edge of Valley Forge National Historical Park westward toward Harrisburg, Pennsylvania, it ends about 15 mi northeast of Harrisburg at the Appalachian Trail, is a marked hiking trail in the Eastern United States extending between Springer Mountain in Georgia and Mount Katahdin in which US state?
Sentence (from "Appalachian Trail"): The trail is about 2,200 miles (3,500 km) long, though the exact length changes over time as parts are modified or rerouted.
Relevant evidence: No