There are
302 mi
from Oshkosh, WI to Mason City, IA
That's the driving distance. It would take 6 hours 18 mins to go from Oshkosh, Wisconsin to Mason City, Iowa.
The flight distance (direct flight from Oshkosh, WI to Mason City, IA) is 240.73 mi.
302 mi = 486.28 kms