There are
2,669 mi
from Allentown, PA to Duarte, CA
That's the driving distance. It would take 1 day 23 hours to go from Allentown, Pennsylvania to Duarte, California.
The flight distance (direct flight from Allentown, PA to Duarte, CA) is 2,351.92 mi.
2,669 mi = 4,294.60 kms