The Northern Arrow was one of the named passenger trains of the Pennsylvania Railroad  serving St. Louis, Missouri, Cincinnati, Ohio, Chicago, Illinois, and Mackinaw City, Michigan. It used the GR&I Branch route. The train was frequented by northbound travelers to popular Northern Michigan destinations of Grand Rapids, Michigan, Petoskey, Michigan and Mackinaw City. One section of the Northern Arrow was a seasonal summer weekly service bewtween Cincinnati, Fort Wayne, Indiana, and Mackinaw City, while another section ran between St. Louis, Fort Wayne, and Mackinaw City.
Service was ended in 1961.