Freetown State Forest
The singletrack trails here tend to be very tight and twisty. Then throw in large rocky sections and you're in for a real technical treat. The singletrack is all connected and criss-crossed with fire roads that are helpful... dirtworld.com
Wrentham State Forest, Wrentham, Massachusetts
Just south of the town of Wrentham, about 30 miles southwest of Boston. The forest is located just a mile from I-495 and four miles from I-95. Rolling terrain, with many short, steep climbs and descents. Some trails have loos... trails.com
F Gilbert Hills
Covering 1,027 acres in Foxboro and Wrentham, F. Gilbert Hills is a "passive use" pine and oak forest. There are 23 miles of trails for various uses, looping through the forest. One of these leads to the Warner Trail, a lo... trailpeak.com