Cross Country Skiing
Most of Yellowstone is backcountry and managed as wilderness; many miles of trails are available for skiing. Track is set only on a few trails. All unplowed roads and trails are open to cross country skiing and showshoeing. When skiing on unplowed roadways used by snowmobiles, keep to the right to avoid accidents.
There are dangers inherent in wilderness: unpredictable wildlife, changing weather conditions, remote thermal areas, deep snow, open streams, and rugged mountains with extreme avalanche danger. When you choose to explore Yellowstone, you experience the land on its own terms; there is no guarantee of your safety. Be prepared for any situation. Carefully read all backcountry guidelines and regulations, and know the limit of your ability.
Most trails are marked with orange metal markers attached to trees. Few streams have bridges. Parties venturing into the backcountry should carry a USGS topographic map and a compass and know how to use them. Even on a well-marked trail, it is easy to get lost in a "whiteout" or blizzard. Only skiers thoroughly familiar with the area should attempt off-trail travel. When planning your trip, get specific information on conditions from rangers at a ranger station or visitor center.
Park elevations with adequate skiable snow range from 7,000 to 10,000 feet (2133 - 3048 meters.) Skiers and snowshoers who live at lower elevations should take a short day or overnight trip to test their capabilities before attempting longer outings.
Several commercial businesses offer guided one-day and overnight trips into Yellowstone's backcountry. These businesses would obtain any needed Backcountry Use Permits for trips that they provide.