There are
1,054 mi
from Sioux Falls, SD to Lockhart, TX
That's the driving distance. It would take 18 hours 24 mins to go from Sioux Falls, South Dakota to Lockhart, Texas.
The flight distance (direct flight from Sioux Falls, SD to Lockhart, TX) is 945.67 mi.
1,054 mi = 1.61 kms