There are
2,199 mi
from Simi Valley, CA to Middletown, OH
That's the driving distance. It would take 1 day 15 hours to go from Simi Valley, California to Middletown, Ohio.
The flight distance (direct flight from Simi Valley, CA to Middletown, OH) is 1,922.12 mi.
2,199 mi = 3.22 kms