Miles between Union City, CA and Castle Rock, CO

There are
1,296 mi
from Union City, CA to Castle Rock, CO

That's the driving distance. It would take 22 hours 22 mins to go from Union City, California to Castle Rock, Colorado.

The flight distance (direct flight from Union City, CA to Castle Rock, CO) is 936.40 mi.

1,296 mi = 1.61 kms