There are
2,172 mi
from San Marcos, CA to Wabash, IN
That's the driving distance. It would take 1 day 14 hours to go from San Marcos, California to Wabash, Indiana.
The flight distance (direct flight from San Marcos, CA to Wabash, IN) is 1,798.40 mi.
2,172 mi = 3.22 kms