There are
2,007 mi
from St Charles, MO to Oakley, CA
That's the driving distance. It would take 1 day 10 hours to go from St Charles, Missouri to Oakley, California.
The flight distance (direct flight from St Charles, MO to Oakley, CA) is 1,682.25 mi.
2,007 mi = 3,229.86 kms