There are
1,893 mi
from Union City, TN to Downey, CA
That's the driving distance. It would take 1 day 8 hours to go from Union City, Tennessee to Downey, California.
The flight distance (direct flight from Union City, TN to Downey, CA) is 1,644.68 mi.
1,893 mi = 3,047.29 kms