Minnesota State Highway 1 (MN 1) is a highway in northwest and northeast Minnesota, which runs from North Dakota Highway 54 at the North Dakota state line (at the Red River in Oslo) and continues east to its eastern terminus at its intersection with Minnesota Highway 61 at the unincorporated community of Illgen City in Beaver Bay Township on the North Shore of Lake Superior. At 346 miles (557 km) in length, Highway 1 is the longest state route in Minnesota.