Miles between Oceanside, CA and Helena, MT

There are
1,203 mi
from Oceanside, CA to Helena, MT

That's the driving distance. It would take 20 hours 26 mins to go from Oceanside, California to Helena, Montana.

The flight distance (direct flight from Oceanside, CA to Helena, MT) is 967.74 mi.

1,203 mi = 1.61 kms