There are
2,188 mi
from Dayton, OH to Rancho Santa Margarita, CA
That's the driving distance. It would take 1 day 14 hours to go from Dayton, Ohio to Rancho Santa Margarita, California.
The flight distance (direct flight from Dayton, OH to Rancho Santa Margarita, CA) is 1,886.94 mi.
2,188 mi = 3.22 kms