There are
2,371 mi
from Parma, OH to San Marcos, CA
That's the driving distance. It would take 1 day 17 hours to go from Parma, Ohio to San Marcos, California.
The flight distance (direct flight from Parma, OH to San Marcos, CA) is 2,014.91 mi.
2,371 mi = 3,815.84 kms