Explore United States's hot springs
The United States holds the largest share of this directory, over 500 springs, from free wilderness pools on Forest Service land to grand desert resorts. No other country mixes raw backcountry soaking and polished spa culture at this scale. The West is the story: the Rockies, Cascades and Basin and Range are one long geothermal seam.
Radium Springs, Georgia
Radium Springs keeps things raw in Georgia, USA — geothermal water, minimal development, maximum atmosphere. Conditions can change with weather and seasons,…
Radium Springs, Georgia →
Rainbow Hot Springs, Colorado
For a wilder soak in Colorado, USA, Rainbow Hot Springs delivers: natural pools, open surroundings and far fewer people. Respect the spot,…
Rainbow Hot Springs, Colorado →
Rainbow Springs, Florida
Rainbow Springs is a natural hot spring in Florida, USA. Getting there can be half the adventure — bring water, pack out…
Rainbow Springs, Florida →
Raspberry Hot Springs, Colorado
Raspberry Hot Springs keeps things raw in Colorado, USA — geothermal water, minimal development, maximum atmosphere. Conditions can change with weather and…
Raspberry Hot Springs, Colorado →
Red Hill Hot Springs, Utah
Red Hill Hot Springs is a natural hot spring in Utah, USA. Getting there can be half the adventure — bring water,…
Red Hill Hot Springs, Utah →
Red River Hot Springs Idaho, United States
Red River Hot Springs Idaho is a natural hot spring in Idaho, USA. Getting there can be half the adventure — bring…
Red River Hot Springs Idaho →
Relax Hotel and Spa, California
Relax Hotel and Spa is a developed hot spring resort in California, USA, with maintained pools and full visitor facilities. Expect comfortable…
Relax Hotel and Spa, California →
Remington Hot Springs, California
Remington Hot Springs is a natural hot spring in California, USA. Getting there can be half the adventure — bring water, pack…
Remington Hot Springs, California →
Renova Hot Springs, Montana
For a wilder soak in Montana, USA, Renova Hot Springs delivers: natural pools, open surroundings and far fewer people. Respect the spot,…
Renova Hot Springs, Montana →
Rhodes Warm Spring, Colorado
Rhodes Warm Spring is a natural hot spring in Colorado, USA. Getting there can be half the adventure — bring water, pack…
Rhodes Warm Spring, Colorado →
Choose your kind of soak
Whether you're traveling with family, seeking a quiet retreat, or looking for mineral-rich waters, United States has a spring for you.
The United States holds the largest share of this directory, over 500 springs, from free wilderness pools on Forest Service land to grand desert resorts. No other country mixes raw backcountry soaking and polished spa culture at this scale. The West is the story: the Rockies, Cascades and Basin and Range are one long geothermal seam.
How to reach United States's hot springs
Fly into Denver for the Colorado Rockies, Salt Lake City for Utah and Idaho, Reno or Las Vegas for Nevada, and Seattle or Portland for the Cascades. A car is essential, most wild springs are miles from the nearest town, and many need high-clearance or 4WD. Pair spring regions with national parks for the classic American road trip.
Where United States's springs cluster
- Colorado — Resort towns like Glenwood Springs and Pagosa Springs mixed with free creekside pools along forest roads.
- Idaho — Dozens of free river-side soaks in national forests, the connoisseur's state for backcountry bathing.
- Nevada & California — Desert playa-edge pools around the Black Rock Desert and the developed resorts of the Owens Valley.
- Pacific Northwest — Forest hot springs in Oregon and Washington, from lodge-run pools to clothing-optional creek soaks.
Best time to visit
September–October is prime: stable weather, fall color, warm water against crisp air. Winter brings legendary snow soaks but closes many forest roads. Desert springs are most comfortable October–April.
Good to know
Leave No Trace is the rule at wild pools: pack out everything, no soap in the water, keep noise down. Many backcountry pools are clothing-optional by custom. Always test temperature before entering, undeveloped sources can scald, and download offline maps, because cell service rarely reaches the trailhead.


