Starting in Valley Forge, the Horse-Shoe Trail is a 140 mile hiking route running to the Appalachian Trail. The hiking trail travels through the following counties as you head from Valley Forge northwest to the Appalachian Trail: Chester County (32.4 miles), Berks County (29.1 miles), Lancaster County (24.2 miles), Lebanon County (19.4 miles), and Dauphin County (35.2 miles). The trail begins in Valley Forge National Park, other access points include Warwick County Park, French Creek State Park, Middle Creek Wildlife Management Area, Swatara State Park, and the Appalachian Trail. The trail is marked by yellow blazes.
Directions to the southern terminus, Valley Forge National Park:
From Philadelphia take the I-76 Schuylkill Expressway west to exit #328B, stay right and merge onto US 422 east. Take the Valley Forge exit onto Route 23 west. Turn right at exit ramp and merge to the center lane, the park entrance is straight through the first set of traffic lights (at intersection with N. Gulph Rd.)
From Harrisburg take I-76 Pennsylvania Turnpike east to exit #326. Exit for Valley Forge, use right side of tollbooth. Turn right at N. Gulph Rd. immediately after the tollbooth and go 1.8 miles. Park entrance is on the left side of Route 23 traffic light.
Overall, Horse-Shoe Trail is the 29th most popular hiking trail of all 32 hikes in Pennsylvania.