- Southern Terminus:
- Mountain Road (CR 55) and US 6 in Port Jervis
- Northern Terminus:
- Mountain Road (CR 73) and Guymard Turnpike (CR 24) in Otisville
- 4.68 miles
Mountain Road is a north/south route in Orange County extending from the border with New Jersey to Otisville. It begins at the state line as CR 55 and then changes designation at US 6 to become CR 35. It continues north to Guymard Turnpike (CR 24), where it changes designation again to become CR 73. The entire length is a two-lane undivided road.