There are
2,414 mi
from Union City, CA to Chattanooga, TN
That's the driving distance. It would take 1 day 18 hours to go from Union City, California to Chattanooga, Tennessee.
The flight distance (direct flight from Union City, CA to Chattanooga, TN) is 2,039.70 mi.
2,414 mi = 3.22 kms