Iowa : Des Moines Valley Region (http://dmvrscca.org/) (mostly Des Moines), Iowa Region (http://www.iowaregionscca.org/) (mostly Waterloo, close to Minnesota for MN folks), Iowa Mustang Club (http://www.mustangclubofcentraliowa.org/) (the Kart track at Marshalltown, get your mini-roadcourse kicks! Not much farther south that Waterloo either.)

http://www.dmvrscca.org/soloschd.htm

Nebraska : Nebraska Region (http://www.nrscca.com/) (mostly Omaha / Lincoln)

http://www.nrscca.com/autocross.html#calendar

Minnesota : Minnesota Autosports Club (http://forum.mnautox.com/forums/) (I don't see events showing yet in a place for non-members to see, they are posting them soon), Land of Lakes Region (http://www.scca-lol.org/) (no events showing yet, website is a bit behind)

Missouri : Kansas City Region (http://www.kcrscca.org/), St. Louis Region (http://www.stlscca.org/)

http://www.kcrscca.org/solo/schedule/2005/
http://www.stlsolo.org/Default.aspx?tabid=106

Illinois : Central Illinois Region (http://www.cir-scca.org/)

http://www.cir-scca.org/

Wisconsin : Milwaukee Region (http://www.scca-milwaukee.org/)

http://www.scca-milwaukee.org/Solo/2006/06sched.htm


Multi-State Midwestern :Midwestern Council of Sports Car Clubs (http://autocross.mcscc.org/), Tri-State Sports Car Council, Central Division SCCA Tour (http://www.solo2.cendiv-scca.org/index.htm)

http://autocross.mcscc.org/events/schedule.php
http://www.tsscc.org/
http://www.solo2.cendiv-scca.org/2006/2006.htm


There are many more out there, please post all the clubs you know of in the area, and definitely use the "Find a Region Near You" tab at the SCCA national site found in my Sig to help in your search.