Miles between San Marcos, CA and East St Louis, IL

There are
1,855 mi
from San Marcos, CA to East St Louis, IL

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

The flight distance (direct flight from San Marcos, CA to East St Louis, IL) is 1,554 mi.

1,855 mi = 1.61 kms