There are
2,866 mi
from Bethlehem, PA to Menlo Park, CA
That's the driving distance. It would take 2 days 2 hours to go from Bethlehem, Pennsylvania to Menlo Park, California.
The flight distance (direct flight from Bethlehem, PA to Menlo Park, CA) is 2,492.07 mi.
2,866 mi = 4,612.75 kms