Miles between Sioux City, IA and Dumas, TX

There are
668 mi
from Sioux City, IA to Dumas, TX

That's the driving distance. It would take 12 hours 56 mins to go from Sioux City, Iowa to Dumas, Texas.

The flight distance (direct flight from Sioux City, IA to Dumas, TX) is 546.69 mi.

668 mi = 1,075.39 kms