There are
1,819 mi
from St Charles, MO to Pasadena, CA
That's the driving distance. It would take 1 day 7 hours to go from St Charles, Missouri to Pasadena, California.
The flight distance (direct flight from St Charles, MO to Pasadena, CA) is 1,562.22 mi.
1,819 mi = 2,927.63 kms