There are
848 mi
from Sioux Falls, SD to Duncanville, TX
That's the driving distance. It would take 15 hours 1 min to go from Sioux Falls, South Dakota to Duncanville, Texas.
The flight distance (direct flight from Sioux Falls, SD to Duncanville, TX) is 753.08 mi.
848 mi = 1,364.74 kms