The Croton Turnpike continues into the town of Somers, passing by some of the last remaining rural areas in Westchester County, including Muscoot Farm, a county owned early-1900s interpretive farm. North of the farm NY 100 intersects with NY 35 in the hamlet of Whitehall Corners, site of a PepsiCo complex. In its northern extremes, NY 100 roughly parallels the Croton Reservoir on the north side before meeting up with US 202 in the hamlet of Somers, where it ends opposite the Elephant Hotel.