Napeague State Park is a 1,364-acre (5.52 km2) park on either side of the Montauk Highway, Route 27, on the "Napeague Stretch" between Amagansett, New York and Montauk, New York, in the United States. It stretches from the Atlantic Ocean across the entire narrow width of the South Fork of Long Island to Gardiners Bay/Block Island Sound on the north.