One day rides that have routes over 100 miles near Michigan?

Okay, so on Sept 16th I did my first century. It felt soooo great. On October 1st I did an almost century (92 miles) at an organized ride. That didn't feel as great because it was soooooooo windy and some of the roads were so rough, I felt like I was MTBing, but I still enjoyed it. Anyway, now I have the bug for longer distances! I am thinking of doing some 2 day rides next season, like maybe the MS150 or the Life Ride, but I was wondering if there are organized ride events within a 4 hour drive radius of Michigan that have a one day ride that is maybe 120 miles or so? Something in Toronto would work or Chicago.

Also, any tips on keeping up my fitness for long distance riding? I don't think I can sit on my trainer for 6 hours without horrible consequences this winter! :)

Look for 200k brevets. www.rusa.org will have a link to any local brevet clubs in your area.