There are
1,877 mi
from Temecula, CA to Union City, TN
That's the driving distance. It would take 1 day 8 hours to go from Temecula, California to Union City, Tennessee.
The flight distance (direct flight from Temecula, CA to Union City, TN) is 1,597.83 mi.
1,877 mi = 3,020.84 kms