There are six miles of marked trails at Stephens State Park for walking, hiking, mountain biking and horseback riding. The trail surfaces range from flat to steep and rocky.
Willow Grove Street (Route 604), 2 miles east of Hackettstown or 7.5 miles west of Route 206 on Waterloo Road (Route 604).
http://www.tripleblaze.com/trail.php?c=3&i=4798