There are
2,675 mi
from Bethlehem, PA to Walnut, CA
That's the driving distance. It would take 1 day 23 hours to go from Bethlehem, Pennsylvania to Walnut, California.
The flight distance (direct flight from Bethlehem, PA to Walnut, CA) is 2,355.58 mi.
2,675 mi = 4,305.34 kms