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Jenny Jump State Forest Trails

Skylands Region, New Jersey

Directions & Trail Description

Location: 3 miles east of Hope. Warren County, NJ

Length/Configuration: 4 mile double loop multi-use mountain bike and hiking trail.

Terrain/Surface: Heavily wooded. Rugged & ungroomed.

Technical Difficulty: Intermediate to advanced.

Caution: mountain bikers share use with hikers. Hunting allowed in season. Bear Country. Check with Park Headquarters before you ride.




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Jenny Jump State Park Mountain Lake Trail Map

Note: The free trail maps on this website have been simplified to provide an overview with approximate locations of trails and special features. Read Full Disclaimer.


Take Route 80 to exit 12 to Hope. Turn onto Route 519 north at blinking light. At third right, turn onto Shiloh Road. Approximately 1 mile, turn right onto State Park Road.

The Mountain Lake Trail, a 3 mile multi-use trail for hiking and mountain biking, can be reached by following Route 617 north from Route 46 in Buttzville. A parking area along Mountain Lake Road provides access to the trail.


General Description:

Within the New Jersey Skylands, along the stunning, rolling terrain of the Jenny Jump Mountain Range, 4,239 acre Jenny Jump State Forest offers beautiful vistas of the Kittatinny Mountain Ridge, the rugged topography of the Atlantic Highlands and views of the Great Meadows in the east. There are six miles of hiking trails and a four mile trail for mountain biking and hiking. The Summit Trail (hiking only), begins at the Park office, climbs gently for 1/4 mile to an elevation of 1,090 feet, traverses along the ridge and meets up with the Ghost Lake Trail which winds down the southeast side of the mountain to Ghost Lake.

The park is studded with ancient rock outcroppings and glacial debris. The variety of terrain from open agricultural fields to mixed hardwood forest provides habitat for deer, turkey and other small game animals. Black bear have frequently been sighted in the area.

The small park campground has twenty-two tent and trailer sites in the woods with fire rings and picnic tables. Showers and toilets are within walking distance. In addition, there are 8 shelter cabins, each with furnished living room with woodburning stove, two rooms each with double-deck bunks, outdoor grill for cooking and picnic table.


The Trails:

Mountain Lake Trail: Accessible from a parking area on the north end of the lake. This 4 mile multi-use double loop trail is designated for hiking and mountain bike use. While this trail is rugged and unmaintained, it is clear enough for the more adventurous mountain biker. It traverses a heavily wooded area which overlooks the scenic Mountain Lake. Top off this rough ride with a smooth cruise around the lake and stop for a snack or lunch. In the summer, this is a popular New Jersey mountain bike destination. It can get crowded on weekends in the summer.

Official Park maps are available at the Park headquarters located in the main activity area, just off of Route 519, northeast of Hope.


Point of Interest:

If you are camping in the park or staying nearby you may want to visit the Greenwood Observatory. Located on the southeast side of the ridge, the observatory sits at 1100 feet and provides excellent viewing and exploration of the night sky from this location. The United Astronomy Club of New Jersey offers two hour programs on a range of topics from astrophysics to a children's guide to the planets each Saturday evening from 8-10. These presentations are followed (weather permitting) by an observing session. Subjects for the weekly programs are announced at the park office or on the UACNJ website. (

For More Information:

Jenny Jump State Forest:
P.O. Box 150
Hope, NJ 07844

Phone: (908) 459-4366
TTY Users: (800) 852-7899 (New Jersey Relay) or 711 (AT&T National Relay Service)

Website: Jenny Jump State Forest



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