There are
1,894 mi
from St Charles, MO to Porterville, CA
That's the driving distance. It would take 1 day 9 hours to go from St Charles, Missouri to Porterville, California.
The flight distance (direct flight from St Charles, MO to Porterville, CA) is 1,568.92 mi.
1,894 mi = 3,047.57 kms