Looks like the impending spring is waking the forum back up
I've always been partial to south western Wisconsin. We did a group drive down there last fall with 15+ STs. We'll probably do another this year.
A little closer, there is some stuff in the area between Marine-On-St. Croix and Hastings that is pretty good (Stagecoach Trail south of 94 is awesome). Could set something up in summer and stop at Nelson's for Ice Cream or something.
Otherwise, I used to live across the highway from the "racetrack" at Opus II in Minnetonka. It's not as good since they put in the stoplight, but still good for the occasional late night lap or 2, all one way streets, no curbs. My brother and I have both had impromptu introductions to local law enforcement there followed by "performance awards", so try not to go too crazy.
Opus
Otherwise, I've got a pretty good loop on the west side of the city that I play on now. I live in Mound, so it's good for a quick blast when I need one.
Delano Loop