Four of us made the Circle Tour on our motorcycles in early August 2009. We took 4-1/2 days to do it, but I would plan for longer so you can see plenty of sights. We started in Ashland, Wisconsin, and went counterclockwise. The weather was nice with only three hours of rain the entire trip.
Whitefish Point has some good sights to see. Crossed into Canada at Sault Ste. Marie with no problems. Plenty of gas along the way in Canada, but find a hotel early and get off the roads well before dark to avoid the moose. Entering Minnesota, a must stop and see is Split Rock Lighthouse and then Gooseberry Falls State Park. Check out the bridge in downtown Duluth.
If you own a bike, you gotta make this trip!
John Majeske, Bettendorf, Iowa