There are
892 mi
from Allentown, PA to Opelika, AL
That's the driving distance. It would take 16 hours 55 mins to go from Allentown, Pennsylvania to Opelika, Alabama.
The flight distance (direct flight from Allentown, PA to Opelika, AL) is 775.75 mi.
892 mi = 1,435.47 kms