Lehigh Mountain features 10 miles of hiking trails near Bethlehem, PA.
378 South into Bethlehem. Follow 378 until you see Puggy Dr. on your right, take this and loop around to the left as you cannot make the left at the light. After crossing the light you will be going up Mtn Dr. Take the road on the right across from the TV station (channel 39 PBS I believe) and park in the uppoer lot. There are trails all over.
http://www.tripleblaze.com/trail.php?c=3&i=160