There are
2,446 mi
from San Marcos, CA to Conneaut, OH
That's the driving distance. It would take 1 day 19 hours to go from San Marcos, California to Conneaut, Ohio.
The flight distance (direct flight from San Marcos, CA to Conneaut, OH) is 2,078.18 mi.
2,446 mi = 3.22 kms