Iron Mountain Hot Springs - Day-use fee or pay-per-soak in Glenwood Springs, CO (2026)
Thirty-two riverfront soaking tubs step down to the Colorado River, each set to a different mineral profile and temperature. The new adults-only Marble Bar section adds quiet lounge decks, saunas, and cold plunges.
Iron Mountain Hot Springs is the newest and most curated hot-springs operation in Glenwood Springs, Colorado — 32 small soaking pools terraced down to the Colorado River, plus the recent Marble Bar adults-only addition with quiet lounges, saunas, and cold plunges. Each of the 32 pools is fed from a different mineral source and tuned to a different temperature, so visitors rotate through to find the sweet spot. Timed-entry sessions ($44+) cap capacity, which keeps the experience quiet and uncrowded compared to the giant Glenwood Hot Springs Pool five minutes away. The ratio of polish to pricing is the highest in Colorado.
What to expect
Buy a timed-entry session online (especially for ski-season weekends — Vail and Aspen day-trippers fill it). Arrive 15 minutes early; late arrivals still end on time. Locker rooms, towels included. The 32 pools step down to the river, with the Marble Bar adults-only zone uphill and to the side. Plan 2-3 hours minimum. Pair with the historic Glenwood Hot Springs Pool 5 minutes east for a different format on the same trip.
Temperature
98°-108°F
Pools
32 soaking pools
Best season
Year-round
Reservations
Required
Dog policy
No pets at pools
Family policy
Family windows available
Safety notes
- Arrive 15 minutes early—late arrivals still end when the session clock expires.
- Strong sulfur smell on windy days; sensitive guests should target morning slots.
Amenities & etiquette
FAQ
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Nearby hot springs
Avalanche Ranch Hot Springs
Carbondale, CO
Three cascading stone pools spill toward the Crystal River with elk-antler lighting, barn-style changing rooms, and cozy cabins tucked beneath Mount Sopris.
Cottonwood Hot Springs
Buena Vista, CO
Hand-built stone pools sit beside Cottonwood Creek, shaded by ponderosa pine and free of chemical additives. Rustic lodge rooms, creekside cabins, and tent sites make it an easy base for Monarch Pass ski days.
Dunton Hot Springs
Dolores, CO
A restored 1880s ghost town now operates as an ultra-luxury hideaway with log cabins, chef-led dining, and cedar-lined bathhouse pools fed by a 104°F artesian spring. Winter heli-ski packages and summer fly-fishing fill out the all-inclusive itineraries.
Glenwood Hot Springs Resort
Glenwood Springs, CO
America's largest mineral pool taps the Yampah spring and pairs a 405-foot lap pool with a therapy soak. Renovated locker rooms, on-site hotel rooms, and a splash zone make it easy to mix with skiing or rafting trips.
Editor’s picks nearby
- The Springs Resort in Pagosa Springs — 25 mineral pools terraced down to the San Juan River, fed by the 1,000-foot-deep Mother Spring — $79 timed-entry day passes, the most refined of the major Colorado resorts.
- Strawberry Park Hot Springs — the Steamboat-area cult favorite — six stone-bordered pools tucked in aspen forest.
- Valley View Hot Springs — the clothing-optional San Luis Valley nature preserve — multiple pools and a sauna deep in the Sangre de Cristo foothills.