There are
2,822 mi
from Pittsburg, CA to Allentown, PA
That's the driving distance. It would take 2 days 1 hour to go from Pittsburg, California to Allentown, Pennsylvania.
The flight distance (direct flight from Pittsburg, CA to Allentown, PA) is 2,457.59 mi.
2,822 mi = 4,541.04 kms