Minnesota State Highway 135 (MN 135) is a highway in northeast Minnesota, which runs from its interchange with U.S. Highway 53 in the city of Virginia and continues northeast to its northern terminus at its intersection with State Highway 1 in Tower. The route is also known as the historic Vermilion Trail from Biwabik to Tower. Highway 135 is also known as Main Street within the city of Biwabik. Highway 135 was originally designated 35 until it was re-numbered to avoid confusion with Interstate Highway 35. Between Virginia and Gilbert, the highway twice crosses the Laurentian Divide.