- Southern Terminus:
- South Road (US 9) and West Main Street (NY 9D) in Wappingers Falls
- Northern Terminus:
- Spackenkill Road (NY 113) and New Hackensack Road (NY 376) in Poughkeepsie
- 3.68 miles
Vassar Road is a northern extension of NY 9D to Poughkeepsie. West Main Street (NY 9D) turns into Vassar Road at its northern terminus at South Road (US 9) in Wappingers Falls. It runs northeast for a few miles to end at the eastern terminus of Spackenkill Road (NY 113) at New Hackensack Road (NY 376) in Poughkeepsie.