Miles between San Marcos, CA and St Charles, IL

There are
2,010 mi
from San Marcos, CA to St Charles, IL

That's the driving distance. It would take 1 day 11 hours to go from San Marcos, California to St Charles, Illinois.

The flight distance (direct flight from San Marcos, CA to St Charles, IL) is 1,683.39 mi.

2,010 mi = 3.22 kms