Montana Ski Areas
The top of Headwaters at Moonlight Basin
Here are links to most of the ski and snowboard resorts, mountains, areas, hills, and Nordic - cross country ski sites, etc. in Montana. There's everything from the big mountains at Big Sky, Red Lodge and Whitefish to local ski hills like Bear Paw and Maverick to Nordic skiing at the very environmentally conscious B Bar Ranch, the Nordic ski clubs around Flathead Lake and the cross-country trails just north of Yellowstone National Park at West Yellowstone's Rendezvous Ski Trails.
The ski areas that I've got data in place for are listed (and linked) below:
Downhill Ski Areas
Locations of the downhill ski areas in Montana
Nordic Ski Areas
Locations of the Nordic ski areas in Montana