Miles between Fullerton, CA and Duncan, OK

There are
1,311 mi
from Fullerton, CA to Duncan, OK

That's the driving distance. It would take 23 hours 20 mins to go from Fullerton, California to Duncan, Oklahoma.

The flight distance (direct flight from Fullerton, CA to Duncan, OK) is 1,140.21 mi.

1,311 mi = 1.61 kms