State Trunk Highway 13 (often called Highway 13, STH-13 or WIS 13) is a state highway running north–south across northwest and central Wisconsin. WIS 13 serves as a major north–south route connecting the communities of Wisconsin Dells, Wisconsin Rapids, Marshfield and Ashland. WIS 13 is part of the Lake Superior Circle Tour from its northern/western terminus to Ashland at is eastern junction with U.S. Highway 2 (US 2). The road also provides access to the Apostle Islands National Lakeshore off the Lake Superior shoreline at Bayfield. The highway is two-lane surface road with the exception of various urban multilane road sections.