Tags: Mountain Range.
This article is for the mountain range in Montana. For the small mountain range in British Columbia Canada also known as Mission Mountain see Mission Ridge (British Columbia). For the summit in California see Mission Peak.The Mission Mountains or Mission Range are a range of the Rocky Mountains located in northwestern Montana in the United States. They lie chiefly in Lake County and Missoula County and are south and east of Flathead Lake and west of the Swan Range.