That one I will be at. Conveniently my parents just built a cabin west of Houghton on the shores of Lake Superior. And sorry but it's full up, the team my brother crews for will likely be staying out there with us.
I was curious too. Minneapolis to Houghton on Yahoo Maps, using what appears to be a hugely inefficient route, was 364 miles. I assume that using state highways in Wisconsin instead of going through Duluth like it plotted would save quite a bit of mileage and time.
6-7 hours to get to my parents' new cabin outside of Houghton. There are two equally awful routes to take. Either go up to Duluth and take US 2 all the way into MI and then I think it's 41 up to Houghton, or go across at Taylor's Falls and take Hwy 8 over to 41 and up from there. US 2 still has some road construction to slow you down and WI 8 has speedbump towns all along the way. Less likely to get ticketed on the open stretches of US 2 though, there are state police everywhere on hwy 8. I prefer taking US 2 just because the trip is a bit more scenic and I like stopping in Ashland for a break. I make the trip in 6 hours and I don't push the limits very much at all. Not really long, but I've made the trip several times so it seems less to me. Definitely worth it: there is better spectating to be had at this rally and it just really is a scenic place to be that time of year. Plus there are some FANTASTIC roads to take a drive on. I highly suggest finding time to take M22 along the western/northern shoreline on the way up to Copper Harbor when the stages are being run up that way. Very tight twisties AND a great view. It's paved, but you can't have your cake and eat it too