Miles between San Marcos, CA and Ballwin, MO

There are
1,832 mi
from San Marcos, CA to Ballwin, MO

That's the driving distance. It would take 1 day 8 hours to go from San Marcos, California to Ballwin, Missouri.

The flight distance (direct flight from San Marcos, CA to Ballwin, MO) is 1,531.38 mi.

1,832 mi = 1.61 kms