There are
2,387 mi
from Dayton, OH to San Leandro, CA
That's the driving distance. It would take 1 day 17 hours to go from Dayton, Ohio to San Leandro, California.
The flight distance (direct flight from Dayton, OH to San Leandro, CA) is 2,035.45 mi.
2,387 mi = 3.22 kms