There are
456 mi
from Yankton, SD to Waunakee, WI
That's the driving distance. It would take 9 hours 7 mins to go from Yankton, South Dakota to Waunakee, Wisconsin.
The flight distance (direct flight from Yankton, SD to Waunakee, WI) is 401.56 mi.
456 mi = 733.18 kms