Most of Yellowstone is backcountry and offers miles of trails for cross-country skiing and snowshoeing. Track is set only on a few trails, however all unplowed roads and trails are open to cross country skiing and snowshoeing. When traversing on unplowed roadways used by snowmobiles, keep to the right to avoid accidents. Most trails are marked with orange metal markers attached to trees.
Few streams have bridges.
Only those thoroughly familiar with the area should attempt off-trail travel. Skiers and snowshoers who live at lower elevations should take a short day or overnight trip to test their capabilities before attempting longer outings. A Backcountry Use Permit is required for all overnight trips. Trip planning should include allowances for limited daylight, snow conditions, temperature extremes, and the number of people in the group, their experience and physical condition. Be prepared for any situation.