There are
1,775 mi
from St Charles, MO to Beaumont, CA
That's the driving distance. It would take 1 day 6 hours to go from St Charles, Missouri to Beaumont, California.
The flight distance (direct flight from St Charles, MO to Beaumont, CA) is 1,504.69 mi.
1,775 mi = 2,856.11 kms