I have recieved some information about the planned route on Saturday morning from Lincoln Park Zoo to Elkhart Lake Wisconsin. It is possible that some details will change, but hopefully this will help those planning on meeting the caravan along the way:
Lincon Park Zoo 10am Departure
Lake Shore Drive North
Sheridan Road North
Dempster West
I94 (Edens) North
Exit at Rt. 176 for a stop at Lambs Farm
I94 North (via Rt. 176 to Waukegan to Rt. 137)
I43 North
Rt. 57 North
Rt. 23 West
Rt. 67 North
County J West
Enter Road America Elkhart Lake at Gate #4
Check out the map of the approximate route here