North Shore Cyclists will host the "Northern Exposure" Ride on Monday September 7. This ride was developed by Charles River Wheelmen (CRW) and is parked with a white letter J. All routes pass through Chelmsford, Westford, Dunstable, and Groton (including Lost Lake). Medium ride adds a bit of Nashua, NH. Long ride adds Hollis, NH and Pepperell to this. Moderate terrain.