There are
2,570 mi
from Ukiah, CA to Oak Ridge, TN
That's the driving distance. It would take 1 day 21 hours to go from Ukiah, California to Oak Ridge, Tennessee.
The flight distance (direct flight from Ukiah, CA to Oak Ridge, TN) is 2,126.79 mi.
2,570 mi = 4,136.42 kms