Miles between Riverside, CA and Duncan, OK

There are
1,283 mi
from Riverside, CA to Duncan, OK

That's the driving distance. It would take 22 hours 28 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.

1,283 mi = 2,064.94 kms