There are
2,203 mi
from Oceanside, CA to Middletown, OH
That's the driving distance. It would take 1 day 15 hours to go from Oceanside, California to Middletown, Ohio.
The flight distance (direct flight from Oceanside, CA to Middletown, OH) is 1,875.19 mi.
2,203 mi = 3.22 kms