Yellow diamonds marked “Trail” on the trees for the Yellow trail and white diamonds of the White trail. Please Note: The Blue trail branches off the Service Road trail and connects to Ridge Road. It climbs through the boulder area and crosses one of the creeks in the area. The creek crossing may be impassable during the wet season. This trail also uses a D&R Greenway easement. Please follow the established trail.

Very gradual increase in elevation with a steeper climb at the end of the yellow trail. Overall it is a change of 80 feet.

Trails are open for use from dawn to dusk.

No Parking after sunset.

No rock climbing or horseback riding.

Deer hunting by permit only in the northern part of the reservation in December to February. During hunting season visitors are asked to wear blaze orange or confine their visits to Sundays when hunting is prohibited.

This is a fragile environment which is very sensitive to disturbance. Stay on the trails marked with yellow or white “trail” marked diamonds.

Great views and wonderful boulder fields

The yellow and white diamond trails take one through the environmentally sensitive Sourland Mountain habitat. On the way one passes through boulder fields of diabase rock that are in the middle of unbroken forest. The headwaters of many small streams are either crossed by the trail or right beside the trail. The two trails together make one big loop with a smaller loop midway on the yellow diamond trail.

The Blue trail takes you away from the main parking area and goes out to Ridge Road.

From Trenton:

Take Route 31 North. Turn right onto Route 654 to Hopewell. In Hopewell turn left at the second light onto Greenwood Avenue. The reservation is in 2.8 miles on the right (you will pass Hillbilly Restaurant (a local landmark). The Sourland Mountain Reservation is 0.5 miles after the restaurant on the right. The entrance to the parking lot is by a mail box for 235 Rileyville Road.

From the Flemington Area:

A small parking lot is available on Ridge Road. Proceed back to Rileyville Road and turn right. Make the first right onto Ridge Road. The lot will about ½ mile on your right.

From Princeton:

From Nassau Street, follow Route 206 South to Elm Road. Turn right onto Elm Road. At the first traffic light, turn left onto Rosedale Road and follow to the end. Turn right onto Carter Road (CR 569). When you pass through the traffic light at Cherry Valley Road, the name will change to Hopewell-Princeton Road. Continue through this traffic light to the end of the road at Broad Street. Turn left onto Broad Street. At the next traffic light turn right onto Greenwood Avenue. Stay on this road for 2.8 miles (you will pass Hillbilly Restaurant (a local landmark). The Sourland Mountain Reservation is 0.5 miles after the restaurant on the right. The entrance to the parking lot is by a mail box for 235 Rileyville Road.