East of Greenfield near Erving, the 4,500 acre Erving State Forest has miles of single and double tracks. The ESF is on the dividing line between Northern and Southern New England forests cultures thus producing high foliage diversity.
To reach the mountain biking trailhead from Greenfield at Exit 26 of US91, head east on SR2 for about 20 miles through Erving. Follow the signs to the Laurel Lake Campground parking. From the campground, mountain bike ride up one of the two old forest roads leading south towards the better terrain. The favored trails in the area include Cut Off, Mountain Road and Pinacle Road. Returning to the parking lot on the Paved Quarry Road or High Street will save you a lot of uphill sweat.
Overall, Erving State Forest is the 11th most popular mountain bike trail of all 35 mountain biking rides in Massachusetts.