There are
2,168 mi
from Knoxville, TN to Walnut, CA
That's the driving distance. It would take 1 day 13 hours to go from Knoxville, Tennessee to Walnut, California.
The flight distance (direct flight from Knoxville, TN to Walnut, CA) is 1,916.42 mi.
2,168 mi = 3.22 kms