Swatara State Park features 7 miles of hiking trails near Hershey, PA.
Swatara State Park is in Lebanon and Schuylkill counties, 14 miles north of Lebanon and 3 miles west of Pine Grove. The park is easily reached from I-81: at Exit 90, Lickdale, follow PA 72 north; at Exit 100, take PA 443 west.
http://www.tripleblaze.com/trail.php?c=3&i=2029