Is the most comprehensive I've found. Would check out LAPS and MVP as well as BMW cca, which is great for beginners. Autobahn CC in Joliet is the closest to Chicago (40 min. from downtown w/ no traffic) There literally are events going on constantly starting around may ending late sept. I will try to put together a list pretty soon.
mods: akra evo, dinan 3.45 diff, ess akra tune, dinan stg.3, Alcon bbk, HRE P40