There are
2,376 mi
from Middletown, OH to Larkspur, CA
That's the driving distance. It would take 1 day 17 hours to go from Middletown, Ohio to Larkspur, California.
The flight distance (direct flight from Middletown, OH to Larkspur, CA) is 2,043.22 mi.
2,376 mi = 3,823.18 kms