There are
2,473 mi
from Parma, OH to San Mateo, CA
That's the driving distance. It would take 1 day 19 hours to go from Parma, Ohio to San Mateo, California.
The flight distance (direct flight from Parma, OH to San Mateo, CA) is 2,161.51 mi.
2,473 mi = 3.22 kms