There are
628 mi
from San Leandro, CA to Tualatin, OR
That's the driving distance. It would take 12 hours 1 min to go from San Leandro, California to Tualatin, Oregon.
The flight distance (direct flight from San Leandro, CA to Tualatin, OR) is 530.12 mi.
628 mi = 1,011.12 kms