 NY 17F then turned to the south in Hornell, overlapping NY 21 (now NY 36) south to the village of Canisteo.Within the village, it intersected with NY 248 at 22.7 miles (36.5 kilometres) before separating from NY 21 and continuing eastward out of Canisteo.NY 17F then passed through the towns of Cameron and Rathbone before coming to an end at NY 17 (current NY 417) in Addison.