There are
1,860 mi
from Pendleton, OR to Oshkosh, WI
That's the driving distance. It would take 1 day 8 hours to go from Pendleton, Oregon to Oshkosh, Wisconsin.
The flight distance (direct flight from Pendleton, OR to Oshkosh, WI) is 1,477.16 mi.
1,860 mi = 2,993.84 kms