There are
800 mi
from Allentown, PA to Greendale, WI
That's the driving distance. It would take 15 hours 5 mins to go from Allentown, Pennsylvania to Greendale, Wisconsin.
The flight distance (direct flight from Allentown, PA to Greendale, WI) is 663.54 mi.
800 mi = 1,287.87 kms