 PA 772 begins at an intersection with PA 441 north of the borough of Marietta in East Donegal Township, Lancaster County, where Waterford Avenue continues south into Marietta.From here, the route heads northeast on two-lane undivided Anderson Ferry Road, passing through agricultural areas with some trees and homes.The road crosses Donegal Creek and continues through rural land before it heads into residential areas and passes to the east of Donegal Heights and to the west of Donegal High School.