Miles between Napa, CA and Billings, MT

There are
1,142 mi
from Napa, CA to Billings, MT

That's the driving distance. It would take 20 hours 32 mins to go from Napa, California to Billings, Montana.

The flight distance (direct flight from Napa, CA to Billings, MT) is 874.48 mi.

1,142 mi = 1.61 kms