Metropolitan and Micropolitan areas near Martin Hollow Trail, Centre County, Pennsylvania Martin Hollow Trail Main Page HIGH QUALITY TOPO MAP, CLICK HERE More Information about Martin Hollow Trail, Centre County, Pennsylvania Nearest metro area is Lock Haven, Pennsylvania Click here for more outdoors activities near Lock Haven, Pennsylvania General Camping Information List of nearby metros and micros: Lock Haven, Pennsylvania, 20.7 miles away Lewistown, Pennsylvania, 21 miles away Selinsgrove, Pennsylvania, 24.6 miles away Lewisburg, Pennsylvania, 25.7 miles away State College, Pennsylvania, 28.9 miles away Williamsport, Pennsylvania, 30.4 miles away Harrisburg-Carlisle, Pennsylvania, 39.9 miles away Sunbury, Pennsylvania, 47.7 miles away Huntingdon, Pennsylvania, 50.3 miles away Gettysburg, Pennsylvania, 52.4 miles away * Distances listed are direct linear distances, actual travel distance may be different. Go to Pennsylvania Outdoors Index