Northwest of Stanhope, the 6900 acre Allamuchy Mountain State Park has 42 miles of trails open to snowmobile riding that crisscross forests and marshlands. These snowmobile trails are split with 15 miles in the Allamuchy Natural Area and 25 miles of unmarked trails in the northern section of Allamuchy.
Allamuchy Mountain State Park is located three miles north of Hackettstown between Willow Grove/ Waterloo Road (Route 604) on the east, Route 517 on the west, and Cranberry Lake (Route 206) on the north.
While snowmobiling Allamuchy Mountain State Park, the snowmobile must be registered with the New Jersey MVC Agency. The driver does not need a permit or license, but the driver must be at least 14 years old and must wear an approved helmet.
Overall, Allamuchy Mountain State Park is the 7th most popular snowmobile trail of all 8 snowmobiling rides in New Jersey.