There are
2,388 mi
from San Mateo, CA to Blue Ash, OH
That's the driving distance. It would take 1 day 17 hours to go from San Mateo, California to Blue Ash, Ohio.
The flight distance (direct flight from San Mateo, CA to Blue Ash, OH) is 2,043.05 mi.
2,388 mi = 3.22 kms