Boiling River

Boiling River

Yellowstone National Park, Wyoming

4.5(3,245)naturalModerate

Click thumbnails to view larger photos • Photos from Google Maps

🌡️Temperature140°F
🏊Typenatural
🥾DifficultyModerate
💰Price$35 park entry
📅Best SeasonSummer and early fall
👥Crowd LevelHigh

About Boiling River

Where a geothermal hot spring meets the cold Gardner River inside Yellowstone National Park. Bathers find their perfect temperature by positioning between the hot and cold water flows. A unique soaking experience in America's first national park.

Access

Moderate hike

🏕️

Overnight

No

👙

Clothing Optional

No

Features

Yellowstone NPRiver confluenceScenic hikeWildlife viewing

Water Minerals

SulfurSilicaCalcium

Frequently Asked Questions

What is the water temperature at Boiling River?
The water temperature at Boiling River is 140°F.
How much does Boiling River cost?
Boiling River costs $35 park entry per person.
Is Boiling River clothing optional?
No, Boiling River requires swimwear.
What minerals are in the water at Boiling River?
The water at Boiling River contains Sulfur, Silica, Calcium.
How difficult is it to get to Boiling River?
Boiling River has a moderate difficulty level with moderate hike access.

Recent Google Reviews

Kevin Sealy• Google Review

"This was incredibly cool to see. We stopped to see the Northern part of Yellowstone while traveling through Montana. Everything about Mammoth Hot Springs was great. We saw wildlife, the springs, the R..."

2/7/2026
Leanne Lawrence• Google Review

"What a view! A boardwalk wraps around this entire area offering up close and personal views. It's really something to note the steam coming out of the ground, and the shapes and colours of the rock."

3/1/2026
Iryna Shchukina• Google Review

"Mammoth Hot Springs looks like something out of another world. The white travertine terraces really remind me of Pamukkale in Turkey — layered, bright, and невероятно beautiful. Walking along the boa..."

2/16/2026