Captree State Park Beach is located in Gilgo-Oak Beach-Captree on the south shore of Long Island in the United States. It stretches for approximately two miles and boasts soft, golden sand. activities available at the beach include swimming, sunbathing, fishing, and boating. Captree State Park Beach has amenities such as lifeguards on duty during the summer months, bathroom access, outdoor showers, and picnic areas. Visitors can also bring their dogs, but they must be kept on a leash.