There are
2,562 mi
from Knoxville, TN to Ukiah, CA
That's the driving distance. It would take 1 day 21 hours to go from Knoxville, Tennessee to Ukiah, California.
The flight distance (direct flight from Knoxville, TN to Ukiah, CA) is 2,146.42 mi.
2,562 mi = 3.22 kms