There are
462 mi
from Oshkosh, WI to Vandalia, OH
That's the driving distance. It would take 8 hours 58 mins to go from Oshkosh, Wisconsin to Vandalia, Ohio.
The flight distance (direct flight from Oshkosh, WI to Vandalia, OH) is 362.38 mi.
462 mi = 744.26 kms