There are
2,496 mi
from Middletown, OH to Arcata, CA
That's the driving distance. It would take 1 day 20 hours to go from Middletown, Ohio to Arcata, California.
The flight distance (direct flight from Middletown, OH to Arcata, CA) is 2,078.63 mi.
2,496 mi = 4,017.40 kms