There are
315 mi
from Oshkosh, WI to St Peter, MN
That's the driving distance. It would take 6 hours 29 mins to go from Oshkosh, Wisconsin to St Peter, Minnesota.
The flight distance (direct flight from Oshkosh, WI to St Peter, MN) is 269.57 mi.
315 mi = 507.65 kms