There are
738 mi
from Sioux City, IA to Williston, ND
That's the driving distance. It would take 12 hours 15 mins to go from Sioux City, Iowa to Williston, North Dakota.
The flight distance (direct flight from Sioux City, IA to Williston, ND) is 524.11 mi.
738 mi = 1,188.10 kms