There are
631 mi
from Allentown, PA to Seymour, IN
That's the driving distance. It would take 12 hours 34 mins to go from Allentown, Pennsylvania to Seymour, Indiana.
The flight distance (direct flight from Allentown, PA to Seymour, IN) is 563.47 mi.
631 mi = 1,014.79 kms