There are
1,834 mi
from Westminster, CA to Hazelwood, MO
That's the driving distance. It would take 1 day 7 hours to go from Westminster, California to Hazelwood, Missouri.
The flight distance (direct flight from Westminster, CA to Hazelwood, MO) is 1,571.12 mi.
1,834 mi = 2,952.01 kms