There are
2,359 mi
from Dayton, OH to Brentwood, CA
That's the driving distance. It would take 1 day 17 hours to go from Dayton, Ohio to Brentwood, California.
The flight distance (direct flight from Dayton, OH to Brentwood, CA) is 2,007.41 mi.
2,359 mi = 3.22 kms