There are
2,886 mi
from Walnut Creek, CA to Hackensack, NJ
That's the driving distance. It would take 2 days 2 hours to go from Walnut Creek, California to Hackensack, New Jersey.
The flight distance (direct flight from Walnut Creek, CA to Hackensack, NJ) is 2,540.09 mi.
2,886 mi = 4,643.98 kms