There are
546 mi
from St Joseph, MO to Wauwatosa, WI
That's the driving distance. It would take 10 hours 6 mins to go from St Joseph, Missouri to Wauwatosa, Wisconsin.
The flight distance (direct flight from St Joseph, MO to Wauwatosa, WI) is 420.47 mi.
546 mi = 879.38 kms