There are
2,805 mi
from Allentown, PA to Lathrop, CA
That's the driving distance. It would take 2 days 1 hour to go from Allentown, Pennsylvania to Lathrop, California.
The flight distance (direct flight from Allentown, PA to Lathrop, CA) is 2,430.93 mi.
2,805 mi = 3.22 kms