There are
2,690 mi
from Allentown, PA to San Dimas, CA
That's the driving distance. It would take 1 day 23 hours to go from Allentown, Pennsylvania to San Dimas, California.
The flight distance (direct flight from Allentown, PA to San Dimas, CA) is 2,343.92 mi.
2,690 mi = 3.22 kms