There are
1,003 mi
from Allentown, PA to Waterloo, IA
That's the driving distance. It would take 18 hours 39 mins to go from Allentown, Pennsylvania to Waterloo, Iowa.
The flight distance (direct flight from Allentown, PA to Waterloo, IA) is 879.58 mi.
1,003 mi = 1.61 kms