Radium Hot Springs
Radium Hot Springs is a primitive thermal soaking spring located in Grand County, Colorado Hot Springs near Kremmling. Average water soak temperature is 97°F with a geothermal source temperature of 98°F. Access is 100% free on public land, and soak policy is traditionally clothing-optional. Explore nearby springs with our GPS Springs Near Me Finder.
Fact Sheet & Geothermal Specifications
| Average Soak Temp | 97°F |
| Geothermal Source Temp | 98°F |
| Hiking Distance | 0.75 miles (moderate) |
| Access Fee | 100% Free Public Access |
| Clothing Policy | Clothing Optional |
| Pet Policy | Dog Friendly (Leashed) |
| Geothermal Data Citation | USGS Geothermal Data Portal |
| Public Land Management | Colorado BLM Public Land Office |
Detailed Description
Natural thermal pool built into the rocky bank of the Colorado River. Popular cliff jumping and river soaking spot.
Directions & Trailhead Access
From Kremmling, take County Road 11 south to Mugrage Campground trailhead, hike down to the river pool.
Frequently Asked Questions: Radium Hot Springs
Is Radium Hot Springs free?+
Radium Hot Springs in Kremmling, Colorado is 100% free to access on public land with zero admission fees.
What temperature is Radium Hot Springs?+
Radium Hot Springs maintains an average soaking water temperature of 97°F, with geothermal source temperatures recorded by USGS surveys.
Is Radium Hot Springs clothing optional?+
Radium Hot Springs is traditionally clothing-optional for thermal soaking.
How far is the hike to Radium Hot Springs?+
Located near Kremmling, Colorado, Radium Hot Springs is accessed via local road access followed by a 0.75-mile trail walk.
Where to Stay Near Radium Hot Springs
Top-rated cabins, mountain lodges, and hotels near Kremmling / Silverthorne, CO with instant online booking.
Hotel Kremmling & Alpine Suites
Cliffside Colorado River Cabins
USGS Field Data & Community Soaker Reports
Official USGS Geothermal Survey Logs & Verified Traveler ReportsOfficial USGS geothermal survey record for Radium Hot Springs in Colorado. Source soak temperature verified at 97°F near Kremmling. Public land access verified with zero entrance fee.
Wilderness access guide for Radium Hot Springs: Leashed pets permitted in surrounding trail areas. Practice Leave No Trace principles and pack out all waste.