Miles between Great Falls, MT and Walnut, CA

There are
1,237 mi
from Great Falls, MT to Walnut, CA

That's the driving distance. It would take 20 hours 49 mins to go from Great Falls, Montana to Walnut, California.

The flight distance (direct flight from Great Falls, MT to Walnut, CA) is 991.79 mi.

1,237 mi = 1,990.64 kms