There are
2,314 mi
from Walnut Creek, CA to Defiance, OH
That's the driving distance. It would take 1 day 16 hours to go from Walnut Creek, California to Defiance, Ohio.
The flight distance (direct flight from Walnut Creek, CA to Defiance, OH) is 2,005.33 mi.
2,314 mi = 3,724.21 kms