There are
2,198 mi
from San Marcos, CA to Centerville, OH
That's the driving distance. It would take 1 day 15 hours to go from San Marcos, California to Centerville, Ohio.
The flight distance (direct flight from San Marcos, CA to Centerville, OH) is 1,878.43 mi.
2,198 mi = 3,537.78 kms