Pack for bear country, geysers, and unpredictable mountain weather
Build My Yellowstone Pack List →Yellowstone is America's first national park and the world's largest active volcanic system. Home to over half the world's geysers, abundant wildlife including bison and grizzly bears, and vast backcountry. Use this packing guide as a starting point, then let PackList's AI personalize it based on your exact dates, activities, and gear preferences.
On March 1, 1872, Yellowstone became the first national park for all to enjoy the unique hydrothermal wonders. Today, millions of people come here each year to camp, hike, and enjoy the majesty of the park.
44°F — Clouds (current forecast).
Elk with Calves are Extremely Dangerous Caution
Be alert, especially this time of year around Mammoth Hot Springs. Elk calves may be hidden close to buildings, under or next to vehicles, and around blind corners. You must remain at least 25 yards from all wildlife. If an elk charges, retreat!
Temporary Closure of Some Trails, Backcountry Campsites, and Fishing Areas Park Closure
Certain trails, backcountry campsites, and fishing areas in the western part of the park near Biscuit Basin are closed until further notice to allow for an investigation following a bear-caused human injury.
Traffic Delays - Gardner River High Bridge Information
Expect a single lane of traffic with up to 15-minute delays, 24 hours a day, seven days a week, from April 1 through late October 2026. Oversized/overweight vehicles (8'6"+ wide, 75'+ long, 80,000 lbs+ gross vehicle weight) will not be able to cross the bridge during this time.
Vehicle Entrance Reservation Not Needed Information
Although an entrance pass is required to enter Yellowstone National Park, vehicle reservations are not needed. You are encouraged to purchase an entrance pass before arriving, but you may also purchase passes at any entrance station upon arrival.
Stay 100 yards from bears and wolves, 25 yards from other wildlife
Never approach thermal features — thin crust can break (people have died)
Bear encounters: be loud on the trail, carry bear spray, know how to use it
Altitude ranges 5,000–11,000 ft — watch for altitude sickness
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