Southwest of Boston and northeast of Milford, the Vietnam Trail system has plenty of gnarly singletrack with several big boulder drops along the headwaters of the Upper Charles River
It is located 29 miles west of Boston. Follow the Mass Pke west to Exit 11a. Follow US495 south to Exit 20. Turn left on SR85 heading north. After right at B.K. & McDs, follow road past hotel. Take the first right and proceed under the bridge. The trail starts about 500 feet further up the road on the left. As the Vietnam Trail has become more popular, parking has become a hot issue with local residents and businesses. NEMBA has obtained permission from the American Athletic Club to park in their large lot. There are several trail entrances nearby along Rt 16. We encourage you to thank them by patronizing the restaurant and being respectful. If many mountain bike riders come in the morning, or early afternoon, that should minimize crowding. If the lot is crowded (eg sports event) seek alternatives. Another option is the Rosenfield town recreation field just south on 85 towards Milford Center.
Overall, Vietnam Trail is the 22nd most popular mountain bike trail of all 35 mountain biking rides in Massachusetts.