Miles between Riverside, CA and Duncan, OK

There are
1,288 mi
from Riverside, CA to Duncan, OK

That's the driving distance. It would take 22 hours 50 mins to go from Riverside, California to Duncan, Oklahoma.

The flight distance (direct flight from Riverside, CA to Duncan, OK) is 1,109.38 mi.

1,288 mi = 1.61 kms