There are
2,044 mi
from Downey, CA to Tullahoma, TN
That's the driving distance. It would take 1 day 11 hours to go from Downey, California to Tullahoma, Tennessee.
The flight distance (direct flight from Downey, CA to Tullahoma, TN) is 1,809.30 mi.
2,044 mi = 3,290.22 kms