There are
1,887 mi
from Oxnard, CA to St Charles, MO
That's the driving distance. It would take 1 day 9 hours to go from Oxnard, California to St Charles, Missouri.
The flight distance (direct flight from Oxnard, CA to St Charles, MO) is 1,616.57 mi.
1,887 mi = 1.61 kms