There are
862 mi
from Sioux Falls, SD to Seagoville, TX
That's the driving distance. It would take 15 hours 17 mins to go from Sioux Falls, South Dakota to Seagoville, Texas.
The flight distance (direct flight from Sioux Falls, SD to Seagoville, TX) is 753.89 mi.
862 mi = 1,387.64 kms