Miles between Round Rock, TX and Helena, MT

There are
1,686 mi
from Round Rock, TX to Helena, MT

That's the driving distance. It would take 1 day 5 hours to go from Round Rock, Texas to Helena, Montana.

The flight distance (direct flight from Round Rock, TX to Helena, MT) is 1,350.49 mi.

1,686 mi = 1.61 kms