New York State Route 186D is a short state highway located in New York. It serves as a connector road, primarily facilitating access between New York State Route 186 and local areas. The route is approximately 1.5 miles long and is primarily used for local traffic. The highway runs through Sullivan County, providing essential connectivity for residents and visitors. It features a mix of rural landscapes and small communities, making it an important route for those traveling within the region. The road is maintained by the state, ensuring it remains safe and accessible for all users.