Miles between Simi Valley, CA and Helena, MT

There are
1,188 mi
from Simi Valley, CA to Helena, MT

That's the driving distance. It would take 20 hours 23 mins to go from Simi Valley, California to Helena, Montana.

The flight distance (direct flight from Simi Valley, CA to Helena, MT) is 921.90 mi.

1,188 mi = 1.61 kms