There are
2,012 mi
from Oshkosh, WI to Portland, OR
That's the driving distance. It would take 1 day 11 hours to go from Oshkosh, Wisconsin to Portland, Oregon.
The flight distance (direct flight from Oshkosh, WI to Portland, OR) is 1,664.75 mi.
2,012 mi = 3,238.43 kms