Dunnfield Parking Area in Worthington State Forest
is the trailhead for:
ϑ Mt. Tammany (Red Dot/Blue Blaze or Tammany Trail)
ϑ The Appalachian Trail northbound in New Jersey
ϑ Sunfish Pond NJ (Worthington State Forest)
ϑ The "Dunnfield Loop" (Dunnfield Hollow Trail to Holly Spring Trail to the Appalachian Trail southbound back to Dunnfield Parking Area)

From Interstate 80 westbound, New York, New Jersey
Continue on Interstate 80 westbound about 3 miles past Exits 4A/B/C, Stay in the right lane and take the rest area exit on the right. Continue on the service road down past the rest area, and up an entrance ramp as if to re-enter Interstate 80 westbound. Turn right from the ramp before it re-enters Interstate 80 into Dunnfield Parking Area. (part of Worthington State Forest)

If you miss the exit for the rest area ...
Stay in the right lane, and continue 1 mile farther on Interstate 80 to NJ Exit 1 "Millbrook/Flatbrookville." Turn hard left at the end of the exit ramp, and continue 3/4 back eastward along the service road, passing Kittatinny Point, and turn left at the underpass. Turn left again on a ramp that re-enters Interstate 80 westbound, but turn right from the ramp before it re-enters Interstate 80 into Dunnfield Parking Area. (part of Worthington State Forest)

From Interstate 80 eastbound
Continue on Interstate 80 eastbound through the toll plaza at the Delaware River. (No toll eastbound) Stay in the right lane and take the first exit ramp (unnumbered) in New Jersey. Continue 1/2 mile along the service road, passing Kittatinny Point, and turn left at the underpass. Turn left again as if to re-enter Interstate 80 westbound. Turn right from the ramp before it re-enters Interstate 80 into Dunnfield Parking Area. (part of Worthington State Forest)

If the parking lot is full at Dunnfield...

Dunnfield is a popular trailhead that is often full by late morning ion summer weekends. If the lot is full, you can try these options:

ϑ Return to the entrance ramp, turn right (a left turn is prohibited!) and enter Interstate 80 westbound. Stay in the right lane and immediately turn to the right off the highway and into a grassy field alongside the highway that is used as an "overflow parking lot." Park here, walk to the back of the grassy area, and follow the gated dirt road back to Dunnfield Parking Area and the trailheads. Do not walk alongside the highway.

ϑ Return to the entrance ramp, turn right (a left turn is prohibited!) and enter Interstate 80 westbound. Stay in the right lane, and continue 1 mile to NJ Exit 1 "Millbrook/Flatbrookville." Turn hard left at the end of the exit ramp, and continue 1/2 mile along the service road to Kittatinny Point.
Park here. Walk ahead on the service road 1/2 mile; be very careful of traffic.
Turn left at the underpass. Turn left again on a ramp that enters Interstate 80 westbound, but turn right from the ramp before it re-enters Interstate 80 into Dunnfield Parking Area, part of Worthington State Forest.

ϑ If you were planning to hike to Sunfish Pond, consider taking Douglas Trail or Garvey Springs Trail, spur trails that lead up from Old Mine Road to the Appalachian Trail near Sunfish Pond. Please link to the National Park Service park bulletin on Hiking the Gap at the right (pdf file) for more information on these trails.