There are
2,030 mi
from Walnut Creek, CA to Manchester, MO
That's the driving distance. It would take 1 day 11 hours to go from Walnut Creek, California to Manchester, Missouri.
The flight distance (direct flight from Walnut Creek, CA to Manchester, MO) is 1,704.38 mi.
2,030 mi = 3,266.32 kms