Miles between Thornton, CO and Union City, CA

There are
1,259 mi
from Thornton, CO to Union City, CA

That's the driving distance. It would take 21 hours 38 mins to go from Thornton, Colorado to Union City, California.

The flight distance (direct flight from Thornton, CO to Union City, CA) is 932.13 mi.

1,259 mi = 1.61 kms