National Parks near Hemlock Trail, Jefferson County, Pennsylvania Hemlock Trail Main Page HIGH QUALITY TOPO MAP, CLICK HERE More Information about Hemlock Trail, Jefferson County, Pennsylvania Nearest metro area is Warren, Pennsylvania Click here for more outdoors activities near Warren, Pennsylvania General Camping Information List of nearby National Parks: Appalachian National Scenic Trail, Harpers Ferry - WV, 136.5 miles away Potomac Heritage National Scenic Trail, McLean - VA, 136.5 miles away Catoctin Mountain Park, Thurmont - MD, 144.5 miles away Shenandoah National Park, Luray - VA, 145.5 miles away Wolf Trap Farm Park, Vienna - VA, 176.6 miles away * Distances listed are direct linear distances, actual travel distance may be different. Go to Pennsylvania Outdoors Index