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Radium Hot Springs Colorado

Radium, Grand County, Colorado, United States
Radium Hot Springs Colorado
Location
Radium, Grand County, Colorado, United States
Water type
radioactive
Temperature
42 °C
pH
7.3

Water profile

Thermicity
Sedative
42 °C
LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation
Bio-active
LowHigh

Rich in active gases or metals — a strong mineral character.

Buoyancy
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

RadonLithiumBicarbonates

Radium Hot Springs near the small ranching community of Radium, Colorado, in the Colorado River headwaters between Kremmling and State Bridge in Grand County, is a roadside thermal spring accessed on the banks of the Colorado River in a landscape of sage-covered canyon terrain typical of the Colorado Plateau's transition zone. The radon-bearing mineral springs, which give the town its name and emerge at bathing temperatures into a simple natural pool accessible from the highway, represent the informal end of America's thermal bathing culture — no infrastructure, no admission charge, just a hot spring on a riverbank in the western wilderness. The surrounding landscape of the Colorado River canyon, with its outstanding trout fishing, the Gore Range beyond and the massive Routt National Forest, provides a quintessentially Western American outdoor context. The broader Grand County region, encompassing Rocky Mountain National Park and the winter park ski area, is one of Colorado's great outdoor recreation destinations.

Insider tip — The Radium springs along the Colorado River in Gore Canyon are among Colorado's least-visited thermal pools, requiring a rough track descent to the river corridor. Waters emerge at 42 °C with naturally elevated radon levels that were once marketed as curative in the early 20th century. The canyon walls of Precambrian granite rise dramatically on both sides, and the Colorado River rushes just metres away. Camping is permitted on BLM land nearby; the springs are most accessible between June and October when river levels allow safe approach.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 42 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features radioactive water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).