There are
446 mi
from Oshkosh, WI to Sioux Falls, SD
That's the driving distance. It would take 8 hours 37 mins to go from Oshkosh, Wisconsin to Sioux Falls, South Dakota.
The flight distance (direct flight from Oshkosh, WI to Sioux Falls, SD) is 408.05 mi.
446 mi = 717.81 kms