Radium Hot Springs

Radium Hot Springs

Kremmling, Colorado

3.7(178)naturalModerateFree

Click thumbnails to view larger photos • Photos from Google Maps

🌡️Temperature80°F
🏊Typenatural
🥾DifficultyModerate
💰PriceFree
📅Best SeasonSummer through fall
👥Crowd LevelLow

About Radium Hot Springs

A lukewarm spring on the banks of the Colorado River accessible by a short paddle or scramble along the riverbank. The modest temperature makes it more of a warm soak than a hot one, but the remote riverside setting and lack of crowds reward those who make the effort. Named for trace amounts of naturally occurring radon in the water.

Access

Moderate hike

🏕️

Overnight

No

👙

Clothing Optional

No

Features

Riverside locationPaddling accessRemote settingTrace radon

Water Minerals

RadonSodiumSulfateCalcium

Frequently Asked Questions

What is the water temperature at Radium Hot Springs?
The water temperature at Radium Hot Springs is 80°F.
How much does Radium Hot Springs cost?
Radium Hot Springs is free to visit.
Is Radium Hot Springs clothing optional?
No, Radium Hot Springs requires swimwear.
What minerals are in the water at Radium Hot Springs?
The water at Radium Hot Springs contains Radon, Sodium, Sulfate, Calcium.
How difficult is it to get to Radium Hot Springs?
Radium Hot Springs has a moderate difficulty level with moderate hike access.

Recent Google Reviews

Belle Lynn• Google Review

"Lovely free, hot springs . Undeveloped anf only a short walk to get there and then a scramble down some rocks (they kind of make a set of stairs). Huge parking lot with bathrooms too when you park ! T..."

11/9/2025
Mark Roberts• Google Review

"Moderately steep 15 min hike to a spectacular little warm spring pool. Trail poorly marked along route, but totally worth it. Note that all dispersed camping in the area has now been prohibited by B..."

2/9/2026
Bobby O• Google Review

"Get ready for a challenge, short hike but a Lil rough, last part you can climb and then enjoy this wonderful place. Please keep it clean, respect wild life/places"

4/15/2025