NY 301 ends at NY 52 (Gleneida Avenue) to the north of Lake Gleneida in the county seat of Carmel. Lake Gleneida is a controlled lake, created when an original pond was dammed in 1870, that is part of New York City's water supply system. At the far end of the junction is the Putnam County Courthouse, a National Register of Historic Places-listed structure that was first constructed in 1814. The eastern terminus of NY 301 is just north of NY 52's eastern terminus at US 6.