There are
2,336 mi
from Dayton, OH to San Luis Obispo, CA
That's the driving distance. It would take 1 day 17 hours to go from Dayton, Ohio to San Luis Obispo, California.
The flight distance (direct flight from Dayton, OH to San Luis Obispo, CA) is 2,008.19 mi.
2,336 mi = 3.22 kms