There are
1,347 mi
from Union City, CA to Hereford, TX
That's the driving distance. It would take 23 hours 37 mins to go from Union City, California to Hereford, Texas.
The flight distance (direct flight from Union City, CA to Hereford, TX) is 1,109.98 mi.
1,347 mi = 2,167.59 kms