There are
387 mi
from Champaign, IL to Wausau, WI
That's the driving distance. It would take 7 hours 8 mins to go from Champaign, Illinois to Wausau, Wisconsin.
The flight distance (direct flight from Champaign, IL to Wausau, WI) is 341.95 mi.
387 mi = 622.36 kms