Mount Sugarloaf State Reservation, managed by the Massachusetts Department of Conservation and Recreation, is located in South Deerfield, Massachusetts, just west of the Connecticut River. The park includes the summits of North Sugarloaf Mountain and South Sugarloaf Mountain, as well as 1.75 miles of frontage on the Connecticut River and two river islands. The park is part of a larger park designation called the Connecticut River Greenway State Park.