There are
1,787 mi
from Kansas City, KS to Walnut Creek, CA
That's the driving distance. It would take 1 day 6 hours to go from Kansas City, Kansas to Walnut Creek, California.
The flight distance (direct flight from Kansas City, KS to Walnut Creek, CA) is 1,480.13 mi.
1,787 mi = 1.61 kms