There are
2,830 mi
from Pittsburg, CA to Bethlehem, PA
That's the driving distance. It would take 2 days 1 hour to go from Pittsburg, California to Bethlehem, Pennsylvania.
The flight distance (direct flight from Pittsburg, CA to Bethlehem, PA) is 2,463.51 mi.
2,830 mi = 4,554.14 kms