The Mattapoisett Rail Trail project is part of both the South Coast Bikeway and the East Coast Greenway. The South Coast Bikeway, when complete will connect Rhode Island to Cape Cod. Off Road Segments exist in Swansea, Somerset, Fall River, New Bedford, and Fairhaven. Additional new segments are currently planned for Marion and Wareham.
The East Coast Greenway is a planned set of off road bicycling paths that extends from Key West, Florida to Calais, Maine. Believe it or not this route is more than 30% complete.