- Southern Terminus:
- Stoneleigh Avenue (Westchester CR 137) at the Westchester-Putnam county line
- Northern Terminus:
- US 6 in Carmel
- 4.37 miles
Stoneleigh Avenue is a north/south route extending from Croton Falls to Carmel. It begins at Somerstown Turnpike (US 202) in Westchester County, just south of the county line. It is designated CR 137 but changes designation to become CR 35 upon entering Putnam County. It crosses a causeway over the Croton Falls Reservoir and runs north through Carmel to end at US 6.