There are
2,308 mi
from Pendleton, OR to Oak Ridge, TN
That's the driving distance. It would take 1 day 16 hours to go from Pendleton, Oregon to Oak Ridge, Tennessee.
The flight distance (direct flight from Pendleton, OR to Oak Ridge, TN) is 1,906.18 mi.
2,308 mi = 3,714.36 kms