There are
1,794 mi
from San Marcos, CA to Thibodaux, LA
That's the driving distance. It would take 1 day 7 hours to go from San Marcos, California to Thibodaux, Louisiana.
The flight distance (direct flight from San Marcos, CA to Thibodaux, LA) is 1,565.35 mi.
1,794 mi = 1.61 kms