There are
2,031 mi
from Walnut Creek, CA to Hazelwood, MO
That's the driving distance. It would take 1 day 11 hours to go from Walnut Creek, California to Hazelwood, Missouri.
The flight distance (direct flight from Walnut Creek, CA to Hazelwood, MO) is 1,710.05 mi.
2,031 mi = 3,268.84 kms