There are
993 mi
from Rancho Cucamonga, CA to Lake Oswego, OR
That's the driving distance. It would take 18 hours 42 mins to go from Rancho Cucamonga, California to Lake Oswego, Oregon.
The flight distance (direct flight from Rancho Cucamonga, CA to Lake Oswego, OR) is 826.51 mi.
993 mi = 1,597.87 kms