There are
324 mi
from Duluth, MN to Waunakee, WI
That's the driving distance. It would take 6 hours 10 mins to go from Duluth, Minnesota to Waunakee, Wisconsin.
The flight distance (direct flight from Duluth, MN to Waunakee, WI) is 279.95 mi.
324 mi = 521.23 kms