There are
2,018 mi
from San Marcos, CA to Terre Haute, IN
That's the driving distance. It would take 1 day 11 hours to go from San Marcos, California to Terre Haute, Indiana.
The flight distance (direct flight from San Marcos, CA to Terre Haute, IN) is 1,704.70 mi.
2,018 mi = 3.22 kms