Miles between Alameda, CA and Ontario, OR

There are
640 mi
from Alameda, CA to Ontario, OR

That's the driving distance. It would take 11 hours 45 mins to go from Alameda, California to Ontario, Oregon.

The flight distance (direct flight from Alameda, CA to Ontario, OR) is 512.75 mi.

640 mi = 1,029.32 kms