It's quite simple:
The route as we know it is Highway 175 starting at Highway 167. (Northwest of Milwaukee)
Going Northwest on Highway 175 until it connects with Highway 67 (right)going northth east until you're at Road America at County J.
Lot's of rolling hill's winding turns beautiful seclude country scenery.
We've only done it southbound but it shouldn't be a problem northbound. Just watch the signs. Stay on 175. Watch for 67. Can't miss Road America.
Should take a little over an hour. There are quicker routes. There may be nicer ones we haven't figured out yet. But this one is nice!
Make sure you're tank's topped off gas stations can be few and far between in some parts.
The restaurant we like is just north of 167 on 175 (brick building - parking in back) Amici's (Italian)
http://amicisrestorante.com/
http://www.foodspot.com/amicis/
WOULD LOVE TO SEE YOU GUYS UP THERE. WOULD LOVE TO DO THE DRIVE WITH YOU TOO... BUT we'll be up there Friday night.