There are
1,877 mi
from Union City, TN to Monrovia, CA
That's the driving distance. It would take 1 day 8 hours to go from Union City, Tennessee to Monrovia, California.
The flight distance (direct flight from Union City, TN to Monrovia, CA) is 1,633.97 mi.
1,877 mi = 3,020.97 kms