Miles between San Mateo, CA and Ontario, CA

There are
404 mi
from San Mateo, CA to Ontario, CA

That's the driving distance. It would take 7 hours 40 mins to go from San Mateo, California to Ontario, California.

The flight distance (direct flight from San Mateo, CA to Ontario, CA) is 356.39 mi.

404 mi = 650.33 kms