• Car Free Week. Yellowstone opens its roads to bicyclists and hikers one week before car traffic resumes each spring (usually in April). This week is a rare opportunity to see Yellowtone's sights and wildlife without the crowds and traffic. Several West Yellowstone businesses rent bikes.  edit
• Young Scientist, [10]. Students ages 5 and up can learn about Yellowstone's geothermal features. Students are given scientist toolkit, including an infrared thermometer, stop watch, magnifying glass and other gear. Once you've finished it, you have a choice of a patch or key chain.  edit
• Jr Ranger Program, [11]. Jr Ranger Program provides an opportunity for children 5 - 12 to earn a Jr Ranger patch. Ages 5-7 can earn the wolf patch and Ages 8-12 can earn the Bear patch. In order to get a patch, a 12 page activity booklet needs to be answered correctly and checked by a ranger. An activity booklet costs $3.  edit

Many visitors believe they can visit all 2.2 million acres of Yellowstone in 1-2 days - all the while staying within sight of their car or tour bus. To truly appreciate this vast park, get off the park roads and paved tourist paths.

• Hiking -- Walking as little as 100 feet away from the camera gangs will give you more of an appreciation for the park. Taking a few 3-4 hour day hikes on established hiking trails is even better, yet will still allow you the luxury of a hot shower in the morning and prepared dinner in the evening.
• Wildlife Viewing -- There is a lot of wildlife to view within the park limits. Birds (osprey, bald eagles, and many, many other species,) bison, big cats, deer, wolves, fox, bears, big-horn sheep, elk, and other animals can all be seen within the park over a short period of time. The more time that you spend in the park, the more wildlife that you will see. Some animals, such as the wolves, bears, and the big-horn sheep are generally not viewable from the park roads. The spaces within the park are grand, so make sure to bring binoculars and/or a spotting scope to best view animals safely.
• Horseback Riding -- There are many opporunities to enjoy YNP and the scenery there. Endulge in horse riding opportunities in YNP and a famous battlefield.
• Backpacking
• Photography -- Yellowstone holds unprecedented photo opportunities with natural environments, beautiful hydrothermal features and animals to be found throughout the park. The colors of the hot springs range from bland white (for the very, very hot) to yellows and blues, greens and oranges. Some of the features are very large, and the challenge can be finding a way to get them in the frame. Be creative! There have been a lot of pictures taken in Yellowstone, and there are a lot more still waiting to be taken.
• Fishing
• Swimming -- Swimming is allowed (but not encouraged) at the Firehole Cascades swimming area, a section of the Firehole River that is warmed by hot springs. This area, accessible via the Firehole Canyon Drive, has a toilet but no lifeguard and not much parking.
• Interpretive Programs

Yellowstone is world-famous for its natural heritage and beauty - and for the fact that it holds half the world's geothermal features, with more than 10,000 examples. Travelers to Yellowstone can view more than 300 geysers (such as "Old Faithful"), pools of boiling mud, and an amazing assemblage of wildlife, such as grizzly bears, wolves, bison and elk, all while standing on the surface of the Earth's largest known "super-volcano".

Mammoth

• Mammoth Hot Springs. Mineral-laden hot water flows from springs, depositing calcite and other substances in its wake. Over time, these deposits form large terraces and other shapes. Some of the terraces grow several inches per day.
• Fort Yellowstone. The historic center of activity during the United States Army's tenure of the park.
• Bunsen Peak. The hike to the top of this 8,564 foot peak takes approximately three hours round trip. The peak overlooks the old Ft. Yellowstone area and it is only a gradual climb. Bring water and snacks (and bear bells if you think they'll work).
• Boiling River. This small swimming hole is one of very few spots in the park where visitors can soak in naturally-heated water. It tends to be very crowded, so try to visit very early in the morning during peak season.

Norris

• Norris Geyser Basin. One of the parks many spectacular thermal areas, and home to Steamboat Geyser, the world's largest geyser, which can throw water more than 300 feet into the air when it erupts. The Norris area is the hottest, most acidic, and most changeable in the park.
• Roaring Mountain. A collection of steam vents and hot springs which make noises ranging from a nearly inaudible whisper to a roar that can be heard miles away. This thermal feature is right beside the park highway.
• Gibbon River.
• Virginia Cascades.

Madison

• Artist Paint Pots. A half-mile hike takes you past many colorful hot springs, steam vents and bubbling mud pots.
• Monument Geyser Basin. Although largely extinct, Monument Geyser Basin contains several intriguing travertine structures and some great views on its mile-long access trail.
• Gibbon Falls. These 84-foot falls tumble down a staircase-like rock -- easy to see from a pullover area on the park highway.
• Madison River. The river creates a canyon with steep, tree-covered rock walls on each side.
• Terrace Springs.
• Firehole Canyon Drive and Firehole Falls.
• National Park Mountain. The mountain where the Madison and Firehole rivers meet. As legend has it, this is where the idea came about to preserve Yellowstone as a National Park.

Geyser basins, including Old Faithful

• Upper Geyser Basin. The most popular visitor area in the park, the Upper Geyser Basin is home to the largest number of geysers in the park, with over 100 located within a one square mile area. Boardwalks allow access to the most interesting areas. Do not leave the trails; the surface here is thin and unstable and has a real chance of depositing you in a boiling pool of water if you walk where you're not supposed to.
  • Old Faithful The world's most famous geyser, with large eruptions occurring an average of about once every hour and a half. Despite its reputation for having eruptions you can set a watch to, the timing between each eruption has actually been increasing over the past several decades. Rangers are able to predict the geyser's eruptions to within about 10 minutes, provided the duration of the previous eruption is known.
  • Other geysers in Upper Geyser Basin that are well enough understood to be predictable (sort of!) are Grand Geyser (probably the finest predictable geyser in the park), Castle Geyser, Daisy Geyser, and Riverside Geyser. Check at the Old Faithful visitor center for predictions, which will have uncertainties of an hour or so associated with them, sometimes more.
• Lower Geyser Basin. Unlike Upper Basin, most active areas here are accessible by car. Great Fountain Geyser is the largest geyser in this group, is easily reached by car, and is well enough understood to be predicted, after a fashion; check at the Old Faithful visitor center, and when you get to the geyser, check the bulletin board again, as its behavior allows periodic updating of the predictions.

• Midway Geyser Basin. This geyser basin is on a hill overlooking the Firehole River. The runoff from its thermal features flows into the river, leaving steaming, colorful trails in its wake. Absolutely spectacular!
  • Grand Prismatic Spring. Perhaps this geyser basin's most famous feature, this is a mass of sapphire blue hot water with bands of yellow and orange around its edges. This spring is more than 300 feet across.
  • Excelsior Geyser once had such violent eruptions that it seems to have blown itself up. This geyser hasn't erupted in years, but it still discharges over 4000 gallons of water per minute into the nearby Firehole River.

• Lone Star Geyser Basin. This and the following are more "Do" than "See," as they require some hiking to reach them. The route takes off from the loop road south of Upper Geyser Basin and follows an old, now-closed road for a total of about 3 miles (5 km). Bicycles can make it most of the way to Lone Star. Nice hike for families.
• Shoshone Geyser Basin. Serious hiking is required to reach this remote basin, which is beyond Lone Star and a good 7 miles (12 km) one way from the trailhead.

Grant Village

• West Thumb Geyser Basin. With a little imagination, Yellowstone Lake looks like a left hand reaching southward. This thermal area is along the western thumblike section of the lake. Several geysers and hot springs (even a couple that are just a few inches across!) are in this area, including the following two sights:
  • Abyss Pool. There is an optical illusion with this brilliant blue hot spring that makes it look bottomless.
  • Fishing Cone. In the past, people used to catch fish in Yellowstone Lake and then cook the fish by dipping them into this partially submerged hot spring. This stunt is no longer allowed.
• Shoshone Lake.

Lake Area

• Yellowstone Lake. This is the largest freshwater lake at an elevation over 8,000 feet in the country. It spreads 20 miles east to west and 30 miles north to south. The Yellowstone River empties out into the lake.
• Mud Volcano/Sulphur Cauldron. This area of the park has pools of mud that are constantly seething and boiling.
  • Mud Volcano This was once a hilltop thermal feature that would hurl mud into the nearby trees during eruptions. One particularly large eruption blew apart the Mud Volcano, leaving a hot, bubbling mud pool at the base of the hill.
  • Dragon's Mouth Spring Steam and hot water surge forth from within an underground cavern, creating waves in the surface mud pool. These surges of water and steam reverberate inside the cavern and make loud thumping or roaring sounds.
  • Sulphur Cauldron This vast hot spring is strongly acidic thanks to the action of microorganisms.
• Natural Bridge.

Canyon

• The Grand Canyon of the Yellowstone. Chemical processes over time have left stripes and patches of different colors in the rock of this canyon. Depths of the canyon reach 800-1200 feet. Trails lead along the north and south rims of the canyon, but while traveling the entire trail in one day is possible, it makes for a long and tiring day. Best to make it two shorter (~3 hour) day hikes. If you're a photo buff, plan your walks so the sun illuminates the opposite side for great pictures.
• Artist point - great spot to view the canyon and the lower falls.
• The Upper and Lower Falls of the Yellowstone. These are the two largest waterfalls in the park. The Upper Falls is 109 feet tall and creates a small canyon. The large Lower Falls is about 309 feet tall, and creates the Grand Canyon of the Yellowstone.
• Hayden Valley. Some people say it's the best place to watch bison in Yellowstone. Hayden Valley is home to a large number of animals, and includes the infamous Mud Volcano.
• Mt. Washburn. One of the best places in the park for spotting bighorn sheep, a trail leads up the mountain to a lookout tower near the 10,243 foot summit. The altitude may affect some hikers, so it is best to be acclimatized to the higher elevation before attempting this hike. In addition, bring extra layers, even in the summer, since the top can be windy and cold.

Tower-Roosevelt

• Specimen Ridge.
• Petrified Forest. This is home to a large petrified forest. It is accessible along the highway.
• Tower Fall. The 100-foot tall waterfall plunges down a rock, creates a thin canyon, and a rapid creek.
• Calcite Springs.

By air

Yellowstone is located far from any major airports. The principal airport serving Yellowstone is the Jackson Hole Airport (IATA: JAC) [2] located within Grand Teton National Park. Non-stop flights to Jackson Hole are available from Atlanta, Chicago, Dallas, Denver, Los Angeles, and Salt Lake City [3]. Most service is seasonal.

As service to Jackson Hole Airport is infrequent and expensive, a better method of entering Yellowstone is by flying into Salt Lake City,[4] (a major hub for Delta Air Lines, the world's largest commercial airline) and driving to Yellowstone via I-15 and US 20—a distance of roughly 320mi (515km) or about 5-6 hours.

Small airports with limited/seasonal commercial service can be found in:

Montana

• Billings (IATA: BIL) [5]
• Bozeman (IATA: BZN) [6]
• Butte (IATA: BTM) [7]
• West Yellowstone (IATA: WYS)

Idaho

• Idaho Falls (IATA: IDA) [8]

Wyoming

• Cody (IATA: COD) [9]

Alternative airports may have less airline service than Jackson Hole.

By car

The park has 5 entrances. The nearest cities to each entrance are given.

• North - Accessed from Livingston). This entrance is open all year and leads to the park headquarters at Mammoth Hot Springs, 5 miles (8 km) inside the park boundary. The iconic Roosevelt Arch is located at this entrance.
• Northeast - Accessed from Cooke City via US Route 212 (Beartooth Highway). The entrance and road to Cooke City are open all year, but Route 212 past Cooke City is closed in winter (mid-October to late May).
• East - Accessed from Cody (53 mi, 85 km) via US Route 14/16/20. This entrance is closed in winter (early November to early May).
• South - Accessed from Grand Teton National Park via US Route 89/191/287. This entrance is closed in winter (early November to mid-May).
• West - Accessed from West Yellowstone via US Route 20/191/287 (60 mi, 97 km from Ashton (Idaho). This entrance is closed in winter (early November to late April).

By car

Most visitors use private vehicles to get around inside Yellowstone National Park. There is no public transportation available within the park. Roads can become very crowded whenever people stop to view wildlife; use pullouts, and be respectful of other motorists to help avoid bear-jams.

By bus

Xanterra Resorts provides bus tours within the park during the summer season. The Lower Loop Tour departs from locations in the southern part of the Park only. The Upper Loop Tour departs from Lake Hotel, Fishing Bridge RV Park, and Canyon Lodge to tour the northern section of the park only. The Grand Loop Tour departs from Gardiner and Mammoth Hot Springs Hotel to tour the entire park in one day. During the winter season snowcoach tours are provided from various locations. Call (307) 344-7311 for information or reservations.

In addition, during the summer season, commercial businesses offer tours originating from many area towns and cities. During the winter season, some businesses provide snowcoach tours for most park roads or bus transportation on the Mammoth Hot Springs to Cooke City road.

By bicycle

Cycling in the park can be a very rewarding experience, but due to the great distances in the park some additional planning is necessary to ensure that lodging is available each night. The park reserves a number of campsites for cyclists, but during the busy summer season it is probably best to reserve sites in advance wherever possible.

Every major village within the park offers food, camping supplies, and souvenirs for sale, although these stores all close during the winter months.

Gasoline and automotive services are available in the following locations:

• Canyon (late April to early November). Gasoline, diesel and auto repair.
• Fishing Bridge (mid May to late September). Gasoline, diesel, propane and auto repair.
• Grant Village (mid April to mid October). Gasoline, diesel, propane, and auto repair.
• Mammoth (early May to mid October). Gasoline and diesel.
• Old Faithful (Lower) (mid April to early November). Gasoline and diesel.
• Old Faithful (Upper) (late May to late September). Gasoline and auto repair.
• Tower Junction (early June to early September). Gasoline.

Most of the villages sell food supplies and may offer snack bars. The following restaurants and cafeterias are also available:

• Old Faithful Inn Dining Room.
• Old Faithful Snow Lodge Restaurant.
• Old Faithful Lodge Cafeteria.
• Lake Yellowstone Hotel Dining Room.
• Lake Lodge Cafeteria.
• Grant Village Restaurant.
• Grant Village Lakehouse Restaurant.
• Canyon Lodge Cafeteria. Great breakfast with omelet of the day ($4.2), links ($1.05 for two), bacon ($1.05 for two), hot oatmeal and a few other choices.
• Canyon Lodge Dining Room.
• Mammoth Hot Springs Hotel Dining Room.
• Roosevelt Lodge Dining Room.

Cocktails can be purchased in the lodge restaurants, and lighter beverages can be obtained at the snack bars.