The Blackstone River Greenway (formerly Bikeway) is a partially completed 48-mile (77 km) paved rail trail defining the course of the East Coast Greenway through the Blackstone Valley from Worcester, Massachusetts to Providence, Rhode Island.
As of 2016, approximately 11.5 miles (18.5 km) of the trail has been completed in Rhode Island, connecting the communities of Woonsocket, Lincoln, Cumberland, and Manville. Some 2.5 miles (4.0 km) of completed trail in Massachusetts connect Worcester and Millbury, as well as 3.7 miles of trail connecting Uxbridge and Blackstone.
The path follows the right-of-way of the old Providence and Worcester Railroad and its predecessor, the Blackstone Canal, running alongside the Blackstone River. Once constructed, the greenway will be linked to the East Bay Bike Path, for an additional 14.5 miles (23.3 km) of trail to Bristol, Rhode Island. The Blackstone River Greenway is also a designated section of the East Coast Greenway, the 3,000-mile trail system connecting cities from Maine to Florida.
In 1985, the Blackstone River Valley National Heritage Corridor (known after 1999 as the John H. Chafee Blackstone River Valley National Heritage Corridor) was designated by the United States Congress, following the path of the Blackstone River from Providence to Worcester.