There are
814 mi
from Bethlehem, PA to West Allis, WI
That's the driving distance. It would take 15 hours 24 mins to go from Bethlehem, Pennsylvania to West Allis, Wisconsin.
The flight distance (direct flight from Bethlehem, PA to West Allis, WI) is 670.57 mi.
814 mi = 1,310.47 kms