Check Out This Guide to 71 Natural Hot Springs Across the U.S.

carrentals natural hot springs guide us man in

A hot spring is an exposed pool of water heated either by geothermal energy stored in the earth’s mantle or by volcanic activity nearby. Many natural hot springs are far too warm for contact with your body and some are home to dangerous microorganisms that can cause harmful or even deadly infections. It’s a good idea to trust the experts when planning your natural hot spring hike.

When you think of natural hot springs, you likely picture a deep blue pool surrounded by the rugged Icelandic countryside or a Japanese snow monkey immersed in the warm waters of a Nagano spring. In fact, America is home to 1,161 known thermal springs, and thanks to research conducted by CarRentals, you can now easily find your way to 71 of those.

Well, maybe not too easily — while many of the hot springs contained in the report are easily accessed via vehicle, others require hiking. Sidebar: many do not require clothing.

CarRentals’ handy guide features five hot springs in Arizona, 14 in California, seven in Colorado, 12 in Idaho, 12 in Nevada, nine in Oregon, five in Utah, and six in Washington. They produced a helpful infographic that shows which springs are accessible by car and which require trekking on foot, which require a permit or fee, and which are clothing optional. “We weren’t just referring to the type of spring when we said ‘au naturel,'” CarRentals jokes.

As a heads up, all Arizona and Washington State hot springs listed welcome bathers in the buff. In Utah? Bathing suits required across the board. Each of the other states is a mix.

If the winter chill has you avoiding the trails, maybe a warm dip at the hike’s end will entice? And even in summer, a good hot soak can soothe tired muscles after that vigorous trek. So grab your pack and a bathing suit (or not) and hit up some of the most easily accessible natural hot springs dotting the United States.

If you’d rather enjoy cooler water, check out the best natural swimming holes in the U.S. Swimming abroad? Here are the best hot springs around the world, according to The Manual crew.


Witness the Bizarre Natural Beauty of Yosemite’s Annual ‘Firefall’ Event

Even frequent visitors to California's Yosemite National Park have likely never witnessed the annual “Firefall” event.
Fashion & Style

Keep Your Package in Place with these Pouch Underwear Options

Your "business" needs to be secure while you get down to business.
Food & Drink

Why Order Out When You Can Easily Make Teriyaki Chicken Yourself?

Say goodbye to delivery chicken teriyaki and hello to this simple, delicious recipe.

How to Survive a Bear Attack: Brown Bears, Black Bears, Polar Bears, Oh My

The chances of encountering a bear in the wild are slim, but you should always be prepared for the worst.

Tips for Camping in the Rain You Should Read Before You Get Soaked

There are several pieces of gear, a few techniques, and some clever hacks that will make your sodden outdoor experience a pleasure despite the drizzle or downpour.

Outdoor Retailer Snow Show 2019: First Look at the Coolest Upcoming Gear

Here are the coolest gear pieces and insane technologies that we saw at Outdoor Retailer. These products are a sneak peek at what will be available to the public in the next few years.

The Best Travel and Adventure Documentaries on Netflix Right Now

If you're reading this, you're staring at a screen. Wouldn't you rather be exploring a different part of the world than the Internet?

4 of the Most Dangerous Hikes in the World

You'll need a healthy dose of fear and a desire to push your self to the edge — just not over it.

6 Most Scenic Day Hikes in U.S. National Parks

It’s no wonder that some of the best views in the country are located within national parks.

4 of the Most Challenging Day Hikes in the U.S.

These trails are not for the faint of heart, but if you possess the necessary skills and are in above-average shape, they can be knocked out in one day.

Camp, Eat, and Have a Beer Underwater with the Ocean Space Habitat ‘Tent’

Imagine playing poker and sharing a bottle of bourbon with your buddies underwater.

The Essential List of Best Gear for the Climbing Gym

Even when it’s 0 degrees outside or raining sideways, you can still climb inside in a climbing gym. Here's the gear you need to start.

If Iron Man Designed a Ski Boot, It Would Be the Dahu Écorce

A hinge system and inner boot allow the wearer to step out of the plastic shell and walk around.