With the dual sport I braaaaaaaap anywhere I want now!
I've been to the following off road parks.
Rocky Glen - Rockford
Great place to ride for a few hours. Pretty close. But kind of small.
Atkinson Off Road Park - Atkinson, IL
Great open riding. Twice the size of Rocky Glen. Little over 2 hr drive.
Badlands Off Road Park - Attica
Probably the best park in the Midwest. 800 acres with open and tight places to ride. Lots to explore. About 3 hr drive.
I will be checking out MI and WI trails this summer. St. Helen, MI seems to be very accomidating to SxS's.