One way trail of challenging single track. Several uphill climbs and lots of turns. The main loop is about 13 miles. There is an optional Westside loop that will add 4 miles. Follow the yellow trail markers. There a few black diamond loops in the northwest section of the park. You need a Department of Conservation Permit to ride here. It's easily acquired for free. Look on www.climbonline.org
Long Island Expressway to Exit 66. Go North on Patchogue Road to Whiskey Road. Parking area on Rocky Point Road just north (1/8 mile) of Whiskey Road. Trail head is right there.
http://www.singletracks.com/item.php?c=1&i=1311