There are
2,634 mi
from Berwick, PA to Walnut, CA
That's the driving distance. It would take 1 day 22 hours to go from Berwick, Pennsylvania to Walnut, California.
The flight distance (direct flight from Berwick, PA to Walnut, CA) is 2,309.40 mi.
2,634 mi = 4,239.18 kms