Name: Greenbrier State Park GPS track, route, trail.
Start: Greenbrier State Park, Mountain Laurel Road, San Mar, Washington County, Maryland, 21713, United States (39.53551 -77.62038)
End: Greenbrier State Park, Mapleville Road, San Mar, Washington County, Maryland, 21713, United States (39.53553 -77.62031)