There are
1,936 mi
from St Charles, MO to Folsom, CA
That's the driving distance. It would take 1 day 9 hours to go from St Charles, Missouri to Folsom, California.
The flight distance (direct flight from St Charles, MO to Folsom, CA) is 1,644.89 mi.
1,936 mi = 3,115.31 kms