There are
1,353 mi
from Union, NJ to Sioux Falls, SD
That's the driving distance. It would take 1 day 1 hour to go from Union, New Jersey to Sioux Falls, South Dakota.
The flight distance (direct flight from Union, NJ to Sioux Falls, SD) is 1,162.90 mi.
1,353 mi = 2,176.71 kms