There are
2,686 mi
from Bethlehem, PA to Fullerton, CA
That's the driving distance. It would take 2 days to go from Bethlehem, Pennsylvania to Fullerton, California.
The flight distance (direct flight from Bethlehem, PA to Fullerton, CA) is 2,362.93 mi.
2,686 mi = 4,322.99 kms