The highway runs from its western terminus at a T-intersection SR 7 approximately  west of the village of Orangeville to its eastern terminus at the Pennsylvania State line in Orangeville, where SR 609 meets a county-maintained road that straddles the border, Brockway–Sharon Road (County Road 182, or CR 182), at a T-intersection.
The road stretches from its western terminus at a T-intersection SR 7 roughly west of the village of Orangeville to its eastern terminus at the Pennsylvania state line in Orangeville, where SR 609 meets a county-maintained road that spans the border, Brockway–Sharon Road (County Road 182, or CR 182), at a T-intersection.