There are
409 mi
from Oshkosh, WI to Sylvania, OH
That's the driving distance. It would take 7 hours 53 mins to go from Oshkosh, Wisconsin to Sylvania, Ohio.
The flight distance (direct flight from Oshkosh, WI to Sylvania, OH) is 291.79 mi.
409 mi = 658.12 kms