There are
2,144 mi
from Riverside, CA to Middletown, OH
That's the driving distance. It would take 1 day 13 hours to go from Riverside, California to Middletown, Ohio.
The flight distance (direct flight from Riverside, CA to Middletown, OH) is 1,856.23 mi.
2,144 mi = 3,449.85 kms