Take William Floyd Parkway (Long Island Expressway, exit 68 south) to its southern terminus at Fire Island.
From the Village of Westhampton Beach, go south on Jessup Lane and cross the bridge. Turn right onto Dune Road. Follow Dune Road to its western terminus in Westhampton Beach.
Take Sunrise Highway to exit 66 (first exit on east side of the Shinnecock Canal). At stop sign, proceed straight through intersection. Make a right turn at stop sign, and then take your first left. Park entrance will be on your right.