Backpacking
Yellowstone has a designated backcountry campsite system, and a Backcountry Use Permit is required for all overnight stays. Each designated campsite has a maximum limit for the number of people and stock allowed per night. The maximum stay per campsite varies from 1 to 3 nights per trip. Campfires are permitted only in established fire pits. Wood fires are not allowed in some backcountry campsites. A food storage pole is provided at most designated campsites so that food and attractants may be secured from bears. Neither hunting nor firearms are allowed in Yellowstone's backcountry.
Permits may be obtained only in person and no more than 48 hours in advance of your trip. Permits are available from most ranger stations and visitor centers. In order to obtain the best information on trail conditions, permits should be obtained from the ranger station or visitor center nearest to the area where your trip is to begin. The Backcountry Use Permit is valid only for the itinerary and dates specified. Backcountry travelers must have their permits in possession while in the backcountry.