There are
2,187 mi
from Downey, CA to Knoxville, TN
That's the driving distance. It would take 1 day 14 hours to go from Downey, California to Knoxville, Tennessee.
The flight distance (direct flight from Downey, CA to Knoxville, TN) is 1,932.66 mi.
2,187 mi = 3.22 kms