The Neponset River Greenway Trail on the Boston and Milton shores of the River is a miles-long, multi-use trail that, when completed, will extend from the mouth of the Neponset River in Dorchester (Port Norfolk neighborhood) to the Martini Shell in Hyde Park.

Uniting the communities of Dorchester, Hyde Park, Mattapan, and Milton, the trail connects a series of parks and provides an exciting opportunity to appreciate the outdoors in an otherwise urban area.

The Massachusetts Department of Conservation and Recreation (DCR) owns much of the shoreline, including the abandoned railway line which was transformed into the Greenway trail from the mouth of the Neponset River Estuary through Pope John Paul II Park (paralleling the trolley line), and onward.