There are
306 mi
from Oshkosh, WI to Chaska, MN
That's the driving distance. It would take 5 hours 57 mins to go from Oshkosh, Wisconsin to Chaska, Minnesota.
The flight distance (direct flight from Oshkosh, WI to Chaska, MN) is 255.20 mi.
306 mi = 492.70 kms