The Boroughs Loop Trail connects the trail networks of Marlborough, Southborough, Westborough, and Northborough to create a 33-mile regional trail that encourages the exploration, enjoyment, and protection of the Boroughs' beauty and natural resources. (Approximately 24 miles are open so far.)
The Boroughs Loop Trail links wooded walking trails, bike paths, aqueduct trails, and sidewalks. Hikers, walkers, and runners are welcome on all parts of the trail. Some sections allow mountain biking and dog walking.
Scroll down to find both an Interactive Map and four Printable/Downloadable Trail Maps.