There are
607 mi
from Waterloo, IA to Okmulgee, OK
That's the driving distance. It would take 11 hours 24 mins to go from Waterloo, Iowa to Okmulgee, Oklahoma.
The flight distance (direct flight from Waterloo, IA to Okmulgee, OK) is 512.64 mi.
607 mi = 976.24 kms