Miles between San Marcos, CA and St Louis, MO

There are
1,851 mi
from San Marcos, CA to St Louis, MO

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

The flight distance (direct flight from San Marcos, CA to St Louis, MO) is 1,550.23 mi.

1,851 mi = 1.61 kms