There are
2,681 mi
from Allentown, PA to San Gabriel, CA
That's the driving distance. It would take 1 day 23 hours to go from Allentown, Pennsylvania to San Gabriel, California.
The flight distance (direct flight from Allentown, PA to San Gabriel, CA) is 2,359.88 mi.
2,681 mi = 4,313.85 kms