There are
2,408 mi
from Middletown, OH to Seaside, CA
That's the driving distance. It would take 1 day 19 hours to go from Middletown, Ohio to Seaside, California.
The flight distance (direct flight from Middletown, OH to Seaside, CA) is 2,030.67 mi.
2,408 mi = 3,876.05 kms