Miles between San Marcos, CA and Alton, TX

There are
1,526 mi
from San Marcos, CA to Alton, TX

That's the driving distance. It would take 1 day 2 hours to go from San Marcos, California to Alton, Texas.

The flight distance (direct flight from San Marcos, CA to Alton, TX) is 1,224.08 mi.

1,526 mi = 1.61 kms