There are
2,115 mi
from Downey, CA to Crossville, TN
That's the driving distance. It would take 1 day 12 hours to go from Downey, California to Crossville, Tennessee.
The flight distance (direct flight from Downey, CA to Crossville, TN) is 1,871.18 mi.
2,115 mi = 3,404.35 kms