A mileage sign at the Mount Kisco (Metro-North station) in Mount Kisco, New York. The sign dates back to the days of the New York Central Railroad when the Harlem Line went as far north as Chatham Union Station. According to the sign, Grand Central Terminal is 36.7 miles south, and Chatham Union Station is 90.8 miles to the north. The accuracy of those measurements are debatable.