There are a variety of trails here, some paved, some doubletrack, some singletrack. Many of the trails are flat and not too technical, but the trail right along the canal has some more challenging sections. The fact that if you mess up, you'll land in the water makes it seem a little more intimidating than it may deserve.
Parking Lot 1: Take Exit 5w off Everett Turnpike/Route 3 in Nashua. Turn right just after clover-leaf for highway following signs to commuter parking/Police department. Park in the commuter parking lot.<br />Parking Lot 2: Exit 6w off Everett Turnpike/Route 3 in Nashua. Turn LEFT unto Coliseum Dr. AFTER the Christmas Tree Shop/Kohl's shopping mall. The NH State Liquor store will be on your right in .25 miles. Follow Coliseum Dr. to the parking lot at end of road (approx. 1 mile from turn).<br />Parking Lot 3: From Everett Turnpike/Route 3 Northbound, take Exit 5A, Simon Street. Left at stop sign, then first left onto Whipple. Park at the cul-de-sac.
http://www.singletracks.com/item.php?c=1&i=938