Miles between Union City, CA and Great Falls, MT

There are
1,201 mi
from Union City, CA to Great Falls, MT

That's the driving distance. It would take 20 hours 39 mins to go from Union City, California to Great Falls, Montana.

The flight distance (direct flight from Union City, CA to Great Falls, MT) is 874.53 mi.

1,201 mi = 1.61 kms