 NY 166 continues northward through the town of Cherry Valley, intersecting with US 20 a short distance later.NY 166 terminates at the intersection with US 20's northbound lanes, while the right-of-way continues northward towards the Montgomery County line and NY 163 as CR 32.When NY 166 was assigned as part of the 1930 renumbering of state highways in New York, it began at NY 28 in the village of Milford and ended at Main Street (US 20) in the village of Cherry Valley.