Miles between Casper, WY and Duncan, OK

There are
935 mi
from Casper, WY to Duncan, OK

That's the driving distance. It would take 17 hours 4 mins to go from Casper, Wyoming to Duncan, Oklahoma.

The flight distance (direct flight from Casper, WY to Duncan, OK) is 732.03 mi.

935 mi = 1,504.15 kms