There are
3,060 mi
from Walnut Creek, CA to Concord, NH
That's the driving distance. It would take 2 days 7 hours to go from Walnut Creek, California to Concord, New Hampshire.
The flight distance (direct flight from Walnut Creek, CA to Concord, NH) is 2,637.03 mi.
3,060 mi = 4,925.22 kms