Miles between Ontario, CA and St Charles, MO

There are
1,797 mi
from Ontario, CA to St Charles, MO

That's the driving distance. It would take 1 day 7 hours to go from Ontario, California to St Charles, Missouri.

The flight distance (direct flight from Ontario, CA to St Charles, MO) is 1,537.67 mi.

1,797 mi = 1.61 kms