National Parks near Flat Trail, Mifflin County, Pennsylvania Flat Trail Main Page HIGH QUALITY TOPO MAP, CLICK HERE More Information about Flat Trail, Mifflin County, Pennsylvania Nearest metro area is Lewistown, Pennsylvania Click here for more outdoors activities near Lewistown, Pennsylvania General Camping Information List of nearby National Parks: Catoctin Mountain Park, Thurmont - MD, 49.6 miles away Appalachian National Scenic Trail, Harpers Ferry - WV, 61.5 miles away Potomac Heritage National Scenic Trail, McLean - VA, 61.5 miles away Wolf Trap Farm Park, Vienna - VA, 86.7 miles away Glen Echo Park, McLean - VA, 87.9 miles away * Distances listed are direct linear distances, actual travel distance may be different. Go to Pennsylvania Outdoors Index