Medicine Springs (Sun River)
Medicine Springs (Sun River) is a private thermal spring listed in Teton County, Montana Hot Springs near Augusta. Reported soak temperature is 86°F with a historical source temperature of 112°F — actual conditions may differ. Access is subject to admission fees, and clothing policy is listed as swimsuit-required — always confirm before visiting. Explore nearby springs with our GPS Springs Near Me Finder.
Seasonal Soaking & Best Time to Visit
While geothermal pool temperatures remain a constant 86°F year-round, outdoor ambient temperatures fluctuate significantly across Montana. Late spring through autumn offers the most comfortable road access.
Fact Sheet & Geothermal Specifications
| Reported Soak Temp | 86°F |
| Source Temp (Historical) | 112°F |
| Trail Access | Recorded coordinates — access unverified |
| Access Fee | Paid / Resort Fees |
| Clothing Policy | Reported Clothing Required |
| Pet Policy | Reported No Pets |
| Geothermal Data Reference | NOAA Thermal Springs List (1980 archive) |
| Check Land Status | Private land — contact the owner/manager for permission |
Verification & Sources
Compiled from public directory records and community reports — no named source is on file for this listing. Treat details as reported and verify before visiting.
Reviewed September 2026 · Treat all details as reported — verify before visiting · How we verify our data
Detailed Description
Real spring at the confluence of the North and South Forks of the Sun River on the Rocky Mountain Front, adjacent to the Bob Marshall Wilderness — the site of K Bar L Ranch. ~86°F sulfur water flows into a pool available exclusively to ranch guests. Used by Indigenous peoples for healing; homesteaded by a Civil War veteran. NOTE: in Montana, not Idaho. Fee: Private guest ranch — lodging/reservation required. Private property — guest reservations required. Grizzly country; no road access.
Directions & Trailhead Access
From Augusta: Gibson Reservoir — boat to the trailhead at high water, else ~7-mi Sun River Trail hike/ride to the ranch at the forks; helicopter year-round.
Frequently Asked Questions: Medicine Springs (Sun River)
Is Medicine Springs (Sun River) free?+
Medicine Springs (Sun River) is a developed thermal facility near Augusta that requires paid admission.
What temperature is Medicine Springs (Sun River)?+
Medicine Springs (Sun River) has a reported soak temperature of 86°F and a historical source temperature of 112°F in survey records. Historical data may not reflect current conditions — always test water before entering.
Is Medicine Springs (Sun River) clothing optional?+
Medicine Springs (Sun River) is listed as swimsuit-required in directory records. Confirm current rules before visiting, as policies change.
How do you access Medicine Springs (Sun River)?+
Medicine Springs (Sun River) is a recorded location in Teton County. Exact access, parking, and land status are not verified — check with the local land manager (BLM/USFS/NPS) before visiting.
Where to Stay Near Medicine Springs (Sun River)
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Community Soaker Reports
Visitor-submitted reports — not independently verifiedMedicine Springs (Sun River) is a documented geothermal feature in Teton County, Montana, compiled from public directory records and community reports. Reported source temperature: 112°F. Reported soak temperature: 86°F. Visitor details — fees, access status, clothing and pet policies — are community-reported. Always confirm current conditions with the land manager before visiting.
Reference: NOAA Thermal Springs List for the United States (1980 archive) · Historical inventory data — not current conditions
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