Miles between St Louis, MO and San Marcos, CA

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

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

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

1,851 mi = 1.61 kms