There are
39 mi
from Downey, CA to Rancho Cucamonga, CA
That's the driving distance. It would take 50 minutes to go from Downey, California to Rancho Cucamonga, California.
The flight distance (direct flight from Downey, CA to Rancho Cucamonga, CA) is 32.99 mi.
39 mi = 62.91 kms