There are
1,005 mi
from Rialto, CA to Lake Oswego, OR
That's the driving distance. It would take 18 hours 56 mins to go from Rialto, California to Lake Oswego, Oregon.
The flight distance (direct flight from Rialto, CA to Lake Oswego, OR) is 830.40 mi.
1,005 mi = 1.61 kms