There are
1,822 mi
from St Charles, MO to South Pasadena, CA
That's the driving distance. It would take 1 day 7 hours to go from St Charles, Missouri to South Pasadena, California.
The flight distance (direct flight from St Charles, MO to South Pasadena, CA) is 1,563.24 mi.
1,822 mi = 2,932.09 kms