Miles between Simi Valley, CA and Duncan, OK

There are
1,338 mi
from Simi Valley, CA to Duncan, OK

That's the driving distance. It would take 1 day to go from Simi Valley, California to Duncan, Oklahoma.

The flight distance (direct flight from Simi Valley, CA to Duncan, OK) is 1,185.33 mi.

1,338 mi = 1.61 kms