There are
257 mi
from West Allis, WI to Waterloo, IA
That's the driving distance. It would take 5 hours 5 mins to go from West Allis, Wisconsin to Waterloo, Iowa.
The flight distance (direct flight from West Allis, WI to Waterloo, IA) is 222.91 mi.
257 mi = 414.31 kms