There are
757 mi
from Allentown, PA to South Elgin, IL
That's the driving distance. It would take 14 hours 19 mins to go from Allentown, Pennsylvania to South Elgin, Illinois.
The flight distance (direct flight from Allentown, PA to South Elgin, IL) is 670.72 mi.
757 mi = 1,218.06 kms