I know for a fact that it goes east of Duluth, because we were on it this summer. It's a beautiful route through MN and WI. At Hurley, WI, it heads into Michigan's UP. That's where it's broken up. We were on it from Hurley WI to Bemidji MN -- mostly forested, good road for the most part, not heavily traveled but you may have to pass some farm machinery.
Donna