There are
2,343 mi
from Walnut Creek, CA to Middletown, OH
That's the driving distance. It would take 1 day 17 hours to go from Walnut Creek, California to Middletown, Ohio.
The flight distance (direct flight from Walnut Creek, CA to Middletown, OH) is 2,018.99 mi.
2,343 mi = 3,771.33 kms