Grandma's Marathon Two Harbors, Minnesota, United States

Grandma's Marathon is a point-to-point road marathon along the North Shore of Lake Superior from Two Harbors to Canal Park in Duluth, Minnesota, held every June since 1977. The Garry Bjorklund Half Marathon covers the second half of the same route, and a William A. Irvin 5K on a new course kicks off marathon weekend. The marathon and half marathon are USATF certified.