There are
2,280 mi
from Dayton, OH to Hanford, CA
That's the driving distance. It would take 1 day 16 hours to go from Dayton, Ohio to Hanford, California.
The flight distance (direct flight from Dayton, OH to Hanford, CA) is 1,931.06 mi.
2,280 mi = 3,669.71 kms