Miles between Billings, MT and Simi Valley, CA

There are
1,258 mi
from Billings, MT to Simi Valley, CA

That's the driving distance. It would take 22 hours 26 mins to go from Billings, Montana to Simi Valley, California.

The flight distance (direct flight from Billings, MT to Simi Valley, CA) is 961.90 mi.

1,258 mi = 1.61 kms