Mammoth Hot Springs Tours and Tickets

There are plenty of ways to experience Mammoth Hot Springs. Looking at ratings and reviews previously given by customers, these are the best tours available right now:

• Yellowstone and Grand Teton 4-Day 3-Night Wildlife Adventure

• Best of Yellowstone Full-Day National Park Tour From Bozeman

• 2-Day Yellowstone National Park Upper and Lower Loop Exploration

• Full-Day Private Tour and Hike From West Yellowstone

• Yellowstone Upper Loop Wildlife Safari – Lamar Valley – Private

Mammoth Hot Springs doesn’t charge an admission fee. However, it’s located within Yellowstone National Park, which requires an entrance pass, valid for seven days. As of 2026, it costs US$20 per person for those entering on foot or bicycle, and US$35 per vehicle. Non–US residents are charged an additional US$100 per person. If you visit Mammoth Hot Springs as part of a full-day guided tour of the park, expect to pay around US$350 per person in addition to the entrance fee.

Yes, Mammoth Hot Springs is worth visiting if you're in Yellowstone National Park. Its giant travertine terraces are one of the park's most unusual geothermal features. Thanks to its convenient parking and wooden boardwalks, it's also one of the most accessible. Finally, it's a historic and rewarding stop because it's located in the small town of Mammoth where you're likely to see elk grazing among the preserved Fort Yellowstone buildings that date back to the late 1800s. Visit with a guide, and you'll learn all about the site.

Per one customer who booked the Best of Yellowstone Full-Day National Park Tour From Bozeman, "We booked this two days before on a whim since Yellowstone is so large. We wanted to see as much as possible. Our guide Gabrielle was an absolute treasure. She was knowledgeable, fun, warm, and made an incredible day even better. We were able to see so much wildlife and park highlights. The tour vehicle was well equipped with binoculars, scopes, snacks, water, tissues, etc. Ample opportunity for bathroom breaks. Lunch was delicious. 10/10."

It only takes a couple of hours to walk the boardwalks and view the steaming terraces at Mammoth Hot Springs. The trails cover less than 2 miles (3.2 kilometers) through the landscape, so it makes for a quick stop in Yellowstone National park.

No, you cannot go into the hot springs. While you may be tempted to take a dip, doing so could kill you—the water reaches boiling temperatures at just a few feet deep. Visiting Mammoth Hot Springs is still worth your time, as admiring the landscape is reason enough.

The white formations at Mammoth Hot Springs are travertine terraces, created by the interaction of hot water from underground with limestone. They look a bit like snow or ice from a distance, but the structures become a lot clearer as you get closer to this boiling-hot attraction.

Mammoth Hot Springs is popular due to its impressive array of rock formations and unique thermal terrain—and the fact that it's easily accessible within Yellowstone National Park. It’s easy to see why this geological phenomenon draws people from all over the world.

Yes, Mammoth Hot Springs does have a strong sulfur odor, which is a byproduct of the geothermal activity at the hot springs. Some may be put off by the rotten egg-type smell, but it's all part of the experience at this highly popular spot in Yellowstone National Park.

There are tons of things to do when you're done visiting Mammoth Hot Springs. According to travelers, these are some of the top attractions in Yellowstone National Park:

• Hayden Valley

• Old Faithful Geyser

• Fountain Paint Pot

• Grand Prismatic Spring

• Lamar Valley

View Viator's guide to all the best attractions in Yellowstone National Park.