There are
2,588 mi
from Ukiah, CA to Knoxville, TN
That's the driving distance. It would take 1 day 21 hours to go from Ukiah, California to Knoxville, Tennessee.
The flight distance (direct flight from Ukiah, CA to Knoxville, TN) is 2,146.42 mi.
2,588 mi = 4,164.57 kms