At a junction with the western terminus of CR 107 (East Main Street), the moniker of NY 30A switches to North Comrie Avenue, soon reaching a junction with NY 29. At this junction, NY 30A begins paralleling Cayadutta Creek, winding northeast through Johnstown. The route bypasses the city of Gloversville, reaching a junction with NY 29A (Turkey Farm Road) before crossing into a section of Gloversville. In this small section, NY 30A junctions with the terminus of NY 349 (East State Street). NY 30A and NY 349 now parallel each other out of Gloversville, crossing into the town of Mayfield. In Mayfield, NY 30A crosses through the hamlet of Riceville, where it meets an intersection with NY 30. This junction marks the northern terminus of NY 30A, less than a mile south of the entrance to Adirondack Park.