There are
312 mi
from Waterloo, IA to Wausau, WI
That's the driving distance. It would take 6 hours 21 mins to go from Waterloo, Iowa to Wausau, Wisconsin.
The flight distance (direct flight from Waterloo, IA to Wausau, WI) is 217.66 mi.
312 mi = 502.23 kms