There are
1,729 mi
from Pittsburg, CA to San Marcos, TX
That's the driving distance. It would take 1 day 6 hours to go from Pittsburg, California to San Marcos, Texas.
The flight distance (direct flight from Pittsburg, CA to San Marcos, TX) is 1,477.68 mi.
1,729 mi = 2,783.00 kms