There are
1,732 mi
from San Leandro, CA to San Marcos, TX
That's the driving distance. It would take 1 day 6 hours to go from San Leandro, California to San Marcos, Texas.
The flight distance (direct flight from San Leandro, CA to San Marcos, TX) is 1,486.67 mi.
1,732 mi = 1.61 kms