There are
682 mi
from Allentown, PA to Radcliff, KY
That's the driving distance. It would take 13 hours 20 mins to go from Allentown, Pennsylvania to Radcliff, Kentucky.
The flight distance (direct flight from Allentown, PA to Radcliff, KY) is 591.13 mi.
682 mi = 1,097.57 kms