There are
395 mi
from Duluth, MN to Muskego, WI
That's the driving distance. It would take 7 hours 32 mins to go from Duluth, Minnesota to Muskego, Wisconsin.
The flight distance (direct flight from Duluth, MN to Muskego, WI) is 330.90 mi.
395 mi = 636.30 kms