Overview
Yellowstone National Park, established in 1872, covers roughly 2.2 million acres across northwestern Wyoming, with smaller portions extending into Montana and Idaho. It is widely regarded as the world's first national park and remains one of the most geologically and ecologically significant places on Earth.
The park sits atop a volcanic hotspot — the Yellowstone Caldera — which drives an extraordinary concentration of geothermal features: more than 10,000 hydrothermal features, including geysers, hot springs, mudpots, and fumaroles. Roughly half of the world's geysers are found here.
Beyond its geology, Yellowstone supports one of the most intact large-mammal ecosystems in the contiguous United States. Bison herds roam the valleys, wolves (reintroduced in 1995) hunt in the northern ranges, and grizzly and black bears inhabit much of the park. The park also contains the Grand Canyon of the Yellowstone, a dramatic gorge carved by the Yellowstone River, and Yellowstone Lake, one of the largest high-elevation lakes in North America.
Yellowstone is managed by the National Park Service (NPS) and is a UNESCO World Heritage Site. Its sheer scale and variety mean visitors can spend a week here and still not see everything.
Before You Go
Entry Requirements and Visas
Yellowstone is a US federal site, so international visitors must comply with standard US entry requirements. TravelerPulse's Visas section and the US Department of State website (travel.state.gov) are the authoritative sources — check both well in advance of your trip.
Park Passes and Fees
Yellowstone charges an entrance fee per vehicle, per motorcycle, or per person (for those arriving on foot or bicycle). Fees are subject to change — verify current rates at the official NPS site (nps.gov/yell) before you go. The America the Beautiful annual interagency pass covers Yellowstone admission and may be cost-effective if you plan to visit multiple national parks in the same year.
Reservations
Accommodation inside the park — both lodges and campgrounds — books up many months in advance, especially for summer. If visiting July or August, begin planning and booking as early as possible, ideally six to twelve months ahead. Many campgrounds operate on a first-come, first-served basis, so arrive early if you haven't secured a reservation.
What to Pack
- Layered clothing: temperatures can swing dramatically between morning and afternoon and between seasons
- Sturdy, broken-in hiking boots
- Rain gear and sun protection (UV exposure is high at elevation)
- Binoculars for wildlife viewing
- Bear spray (widely available in gateway towns and inside the park); know how to use it before you hike
- Plenty of water and snacks, as services inside the park are concentrated in specific areas
Getting There
Yellowstone has no commercial airport within its boundaries. The most practical approach is to fly into one of the regional airports near the park's entrances, then drive or arrange ground transportation.
Nearest Airports
- Jackson Hole Airport (JAC), Jackson, Wyoming — roughly 60 miles south of the South Entrance; the closest commercial airport with direct flights from several US cities
- Bozeman Yellowstone International Airport (BZN), Bozeman, Montana — approximately 90 miles north of the North Entrance; well-connected with numerous domestic routes
- Idaho Falls Regional Airport (IDA), Idaho — a reasonable option for approaching via the West Entrance
- Billings Logan International Airport (BIL), Billings, Montana — a larger hub further east, roughly 2.5–3 hours from the park
Driving
Most visitors arrive by personal vehicle or rental car. The park has five entrance gates: North (Gardiner, MT), Northeast (Cooke City, MT), East (Cody, WY), South (via Grand Teton NP), and West (West Yellowstone, MT). The North Entrance is the only one open to wheeled vehicles year-round; the others typically close in winter — verify current gate status at nps.gov/yell before traveling.
Winter Access
When roads inside the park close to conventional vehicles (typically November to mid-April for most routes), access is available via guided over-snow vehicles: snowcoaches and snowmobiles. Commercial operators in West Yellowstone, Gardiner, and Flagg Ranch offer these services. Verify availability and book in advance.
Getting Around
A personal vehicle or rental car is by far the most practical way to explore Yellowstone. The Grand Loop Road — a figure-eight road totaling roughly 142 miles — connects the park's major thermal basins, canyon, and lake areas. Allow more time than the mileage suggests: traffic, wildlife jams, and road construction can slow progress significantly in summer.
Wildlife Jams
When bison, bears, wolves, or other wildlife appear near the road, vehicles stop and traffic backs up. These are common and unavoidable. Build buffer time into every driving plan and treat them as wildlife-viewing opportunities rather than frustrations.
Seasonal Bus Service
Xanterra Travel Collection, the park's primary concessioner, operates guided bus tours and, in summer months, a limited hop-on hop-off style transportation option between some lodges and attractions. Verify current schedules and routes directly with Xanterra or the NPS, as offerings change between seasons.
Cycling
Cycling is permitted on paved roads and some designated unpaved roads. However, primary roads are narrow with no dedicated cycling lanes, heavy traffic in summer, and long distances between services — cycling is manageable but requires careful planning and experience with high-traffic roads.
On Foot
Hiking is the best way to reach backcountry thermal features, wildlife areas, and viewpoints away from crowds. A free backcountry permit is required for overnight hikes. Stay on designated boardwalks in thermal areas — the ground crust can be dangerously thin and water temperatures life-threatening.
Where to Stay
Inside the Park
Xanterra Travel Collection operates the majority of lodges and cabins inside Yellowstone's boundaries, including properties at Old Faithful, Canyon Village, Lake Village, Grant Village, and Mammoth Hot Springs. Accommodations range from historic lodge rooms to standard motel-style units and simple cabins. Standards vary considerably by property; read current reviews before booking. All fill very quickly for summer — book as far ahead as possible through the official Yellowstone park lodges booking system.
The NPS also operates campgrounds throughout the park. Some accept advance reservations (book through recreation.gov), while others are first-come, first-served. Verify which is which before you arrive.
Gateway Towns
Staying in a gateway town and making day trips is a popular alternative, particularly if park lodges are booked. Main gateway communities include:
- West Yellowstone, Montana — most popular gateway; wide range of motels, hotels, and vacation rentals
- Gardiner, Montana — smaller, near the North Entrance; year-round road access
- Jackson, Wyoming — larger town with a broad range of accommodation; adds driving time from park center
- Cody, Wyoming — a reasonable base for the East Entrance, with more services than smaller gateways
Prices in and around the park are generally higher than US national averages, particularly in peak season. Verify current rates directly with properties.
Things to See & Do
Geothermal Features
- Old Faithful Geyser — the park's most iconic feature; erupts on a roughly predictable interval (approximately every 60–110 minutes). The NPS Visitor Education Center nearby posts predicted eruption windows. Arrive early in the morning for smaller crowds.
- Grand Prismatic Spring — the largest hot spring in the US and one of the most visually striking; best viewed from the Fairy Falls trail overlook rather than the boardwalk at the spring's edge
- Norris Geyser Basin — the hottest and most dynamic of the park's thermal basins
- Mammoth Hot Springs — terraced travertine formations in the park's north; visually distinctive and different in character from the silica-based features elsewhere
- Midway and Lower Geyser Basins — worth combining with the Upper Basin (Old Faithful area) in a single loop
Wildlife Viewing
- The Lamar Valley in the northeast is widely considered among the best places in North America to observe wolves, particularly during dawn and dusk
- Hayden Valley offers excellent bison and bear sightings
- Spring and early fall are the most productive seasons for wolf activity; summer is best for bear activity near berry patches
- Keep a minimum distance of 100 yards from bears and wolves, and 25 yards from all other wildlife — these are NPS regulations, not guidelines
Scenery and Hiking
- Grand Canyon of the Yellowstone — two major waterfalls (Upper and Lower Falls) and dramatic yellow-and-orange canyon walls; viewable from multiple rim trails
- Mount Washburn — a moderate day hike with panoramic views across the caldera; wildflowers in July
- Shoshone Lake — accessible only on foot or by non-motorized boat; the largest backcountry lake in the lower 48 states
- Yellowstone Lake — the park's dominant water body; scenic drives along its north and east shores
Ranger Programs
The NPS offers free ranger-led walks, campfire talks, and Junior Ranger programs throughout summer. Check the park newspaper (distributed at entrance gates) or the NPS app for current schedules.
Food & Drink
Food and beverage options inside the park are managed primarily by Xanterra and a smaller number of other concessioners. Options range from casual cafeterias and grab-and-go delis at major visitor areas to sit-down dining at larger lodges such as the Old Faithful Inn and Lake Hotel. Quality and selection are functional rather than exceptional; menus are oriented toward American comfort food.
Capacity inside the park is limited, and waits at popular dining locations can be long during peak hours in summer. Packing your own meals and snacks for day trips is practical and economical, and reduces your dependence on crowded in-park options. Picnic areas are plentiful and well-situated throughout the park.
Gateway towns — particularly West Yellowstone and Jackson — offer a wider variety of restaurants, from casual diners to more upscale options. Jackson in particular has a well-developed restaurant scene reflecting its year-round tourism economy. Verify current operating hours and availability locally, as businesses in small gateway towns can have variable seasons.
Practical Information
Cell Service and Connectivity
Cell coverage is extremely limited inside Yellowstone. Most areas of the park have no signal. Download offline maps, the NPS Yellowstone app, and any necessary guides before entering. Do not rely on real-time navigation inside the park.
Altitude
Most of Yellowstone sits between 7,000 and 8,000 feet (roughly 2,100–2,440 meters) above sea level. Visitors unaccustomed to altitude may experience shortness of breath or mild altitude sickness, especially on arrival. Stay hydrated, avoid overexertion on your first day, and allow time to acclimatize.
Thermal Hazard
Hydrothermal water can be near or at boiling point. Stay on designated boardwalks and trails at all times in thermal areas. Do not enter hot springs or allow children or pets near the edges. Injuries from thermal features are recorded every year — many are preventable.
Pets
Pets are permitted in the park but are restricted from most trails, thermal areas, and backcountry. They must be kept on a leash no longer than 6 feet at all times. For practical purposes, pets significantly limit where you can go; leaving them with accommodation outside the park may be more workable.
Emergencies
For emergencies inside the park, contact NPS Rangers. The park operates several visitor centers staffed year-round or seasonally. The nearest full-service hospitals are in surrounding towns — distances are substantial. Travel insurance including emergency medical evacuation is strongly recommended for all visitors.
Leave No Trace
Yellowstone receives millions of visitors annually. Pack out all trash, stay on designated trails, and respect wildlife and vegetation. Collecting rocks, thermal material, or natural objects is illegal.
Safety
Wildlife Safety
Yellowstone's wildlife is wild — not habituated or safe to approach. Bison injure more visitors each year than bears do, largely because their size belies their speed and unpredictability. Maintain the mandatory 25-yard distance from bison and 100 yards from bears and wolves. If a bison or bear approaches you, do not run; back away slowly and create distance.
Carry bear spray on all hikes and know how to deploy it before you need it. Bear spray has been demonstrated to be highly effective when used correctly. Make noise on trails to avoid surprising bears at close range.
Thermal Hazards
As noted under Practical Information: boardwalk closures exist for safety reasons — respect them. Water in thermal features can cause fatal burns within seconds. The ground crust surrounding pools and geysers is unpredictable and has collapsed under visitors in the past.
Weather
Yellowstone's weather is highly variable and can change rapidly. Summer afternoon thunderstorms are common, with lightning risk at elevation. Snow is possible in any month of the year at higher elevations. Check weather forecasts before departing for hikes and carry rain and wind layers regardless of the morning forecast.
Road Conditions
Park roads are repaired on a rolling schedule and can be subject to construction delays. Some roads close seasonally or due to weather. Check current road conditions at nps.gov/yell or call the park's recorded road information line before driving.