New York State Route 920P (NY 920P) is an unsigned reference route designation for Riverside Drive in the Montgomery County town of Glen, New York, in the United States. The roadway connects NY 30A and NY 5S to exit 28 of the New York State Thruway (Interstate 90 or I-90) in the village of Fultonville. Most of Riverside Drive runs alongside the Mohawk River. Although the route is inventoried by the New York State Department of Transportation (NYSDOT) as NY 920P, the reference markers bear the number 862.