Miles between San Marcos, CA and Round Rock, TX

There are
1,329 mi
from San Marcos, CA to Round Rock, TX

That's the driving distance. It would take 23 hours to go from San Marcos, California to Round Rock, Texas.

The flight distance (direct flight from San Marcos, CA to Round Rock, TX) is 1,156.66 mi.

1,329 mi = 1.61 kms