There are
448 mi
from Southfield, MI to Oshkosh, WI
That's the driving distance. It would take 8 hours 32 mins to go from Southfield, Michigan to Oshkosh, Wisconsin.
The flight distance (direct flight from Southfield, MI to Oshkosh, WI) is 288.36 mi.
448 mi = 721.39 kms