Miles between Rancho Cucamonga, CA and Duncan, OK

There are
1,279 mi
from Rancho Cucamonga, CA to Duncan, OK

That's the driving distance. It would take 22 hours 40 mins to go from Rancho Cucamonga, California to Duncan, Oklahoma.

The flight distance (direct flight from Rancho Cucamonga, CA to Duncan, OK) is 1,119.25 mi.

1,279 mi = 1.61 kms