There are
434 mi
from Oshkosh, WI to Romulus, MI
That's the driving distance. It would take 8 hours 14 mins to go from Oshkosh, Wisconsin to Romulus, Michigan.
The flight distance (direct flight from Oshkosh, WI to Romulus, MI) is 287.77 mi.
434 mi = 698.34 kms