There are
1,260 mi
from Rancho Cucamonga, CA to Oak Harbor, WA
That's the driving distance. It would take 1 day to go from Rancho Cucamonga, California to Oak Harbor, Washington.
The flight distance (direct flight from Rancho Cucamonga, CA to Oak Harbor, WA) is 1,014.18 mi.
1,260 mi = 1.61 kms