Miles between Rancho Cucamonga, CA and Duncan, OK

There are
1,274 mi
from Rancho Cucamonga, CA to Duncan, OK

That's the driving distance. It would take 22 hours 18 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.

1,274 mi = 2,050.36 kms