There are
254 mi
from Champaign, IL to Oconomowoc, WI
That's the driving distance. It would take 4 hours 58 mins to go from Champaign, Illinois to Oconomowoc, Wisconsin.
The flight distance (direct flight from Champaign, IL to Oconomowoc, WI) is 207.38 mi.
254 mi = 408.56 kms