Iron Mountain Hot Springs

What to expect

Iron Mountain Hot Springs is the newer of Glenwood Springs’ big soaking spots. Where the Glenwood Hot Springs Pool is one huge historic pool, Iron Mountain is a set of small pools spread along the bank of the Colorado River on the west side of town. The site was renovated and reopened in 2015 with 16 hot springs pools, and it has grown a lot since.

The complex now has four main parts:

• Geothermal Hot Springs: 16 small pools fed by the local hot springs, each kept at a different temperature, plus a cold plunge. The resort lists its hot spring water at 89-108°F32-42°C. This is the original heart of the place and is open to all ages 5 and up.
• Family Zone: one large, warm family mineral pool where younger children are welcome.
• WorldSprings (21+): an adults-only riverside area opened on June 30, 2023. Its pebble-bottomed pools are filled with mineral “recipes” that recreate famous springs, with themes such as Iceland, France, Japan, Turkey, Romania, Bali, Australia, New Zealand, Italy and South Korea. There is also a Dead Sea-style pool, a freshwater confluence pool with waterfalls and cold plunges. The resort said the addition nearly doubled its capacity.
• Sauna Summit (21+): saunas with cold, potassium and magnesium plunge pools.

The resort counts 35 mineral pools in total, though the counts on its own pages vary depending on how the plunges are grouped. Two cafés serve the site: the Sopris Café for the hot springs and family areas, and the Sandbar Café in WorldSprings, which also has poolside and in-pool drink service for adults. A riverside lounge area called The Meadow closes for the cold season.

The mineral water can tarnish jewelry and discolor some swimsuits, so leave rings at home and wear an older suit.

Prices and booking

Prices for 2026, per person:

• General Access (all ages): $43 to $75. Covers the geothermal pools and Family Zone.
• All Access (21+): $75 to $150. Adds WorldSprings and the Sauna Summit.

Within each type there is a Quick Dip of up to three hours and a Day Pass for the whole day with re-entry. Rates vary by day and demand. Booking online saves $5 compared with walking in.

Every pass includes two towels (extra towels $5 each), a free RFID locker and water at hydration stations. Changes cost $5 per pass, with one free cancellation or change up to 48 hours before your visit. A 10% discount is available for medical workers, military, seniors, students, government workers and teachers through ID.me.

Arrive 10 minutes early. Everyone signs a waiver at check-in (it cannot be signed in advance), and a government photo ID is required for the 21+ areas and for alcohol.

Getting there

Iron Mountain is at 281 Centennial St, Glenwood Springs, CO 81601, about a mile west of the Glenwood Hot Springs Pool along the Colorado River. Glenwood Springs is on I-70 about 160 miles west of Denver, where the Roaring Fork River meets the Colorado. Take the main Glenwood Springs exits and head west through town toward the river.

Amtrak’s California Zephyr stops in Glenwood Springs, and from downtown it is a short ride to the resort. In winter, I-70 through Glenwood Canyon and over Vail Pass can close for crashes, rockfall or snow, so check Colorado road conditions before you set out from the Front Range.

When to go

Iron Mountain is open every day of the year except Thanksgiving and Christmas, from 9 a.m. to 10 p.m., and it closes at 5 p.m. on Christmas Eve. It also closes for short maintenance periods, such as October 20 and 21, 2026.

Winter is the classic season: cold air, steam over the river and snow on the canyon walls. Weekends and holidays are busiest. Weekday mornings are the quietest, and a late-evening soak after a day of skiing at Sunlight or Aspen is a popular plan. In summer, the river views are best in the evening when the sun drops behind the canyon.

Rules and etiquette

• Rinse off in the showers before you get in.
• Keep it quiet. Talk at a normal volume. No speakers or amplified audio.
• No outside food, drink or alcohol. Drinks bought on site are allowed in the pools; eat at the café or at a table.
• No smoking or vaping anywhere on the property.
• Age limits: under 5 only in the Family Zone; under 21 kept out of WorldSprings, the Sauna Summit and the Sandbar Café.
• Swimsuits are expected throughout. This is a family resort.

Where to stay nearby

Iron Mountain is a day-use resort. Glenwood Springs has a wide range of motels and hotels, many within a short drive or walk of downtown and the river. Carbondale, about 30 minutes south on CO-82, and the Roaring Fork Valley toward Aspen have more choices, and the White River National Forest around town has campgrounds in summer.

Safety notes

• Heat: The hottest geothermal pools reach about 108°F42°C. Start in a cooler pool, keep hot soaks short and drink water. Get out if you feel dizzy.
• Alcohol: Adults can drink in the 21+ pools. Hot water and alcohol together raise the risk of fainting, so go easy.
• Ice: Decks and steps freeze in winter. Walk carefully between pools.
• Kids: The resort keeps children under 5 out of the geothermal pools. Use the warm Family Zone pool with toddlers and watch older children closely in the hotter pools.

Nearby stops worth adding

Glenwood Springs has two other hot spring businesses: the Glenwood Hot Springs Pool, with its huge historic pool, and Yampah Hot Springs and Vapor Caves, where you sit in natural steam underground. For a free, wild soak, South Canyon Hot Springs is a few miles west of town. Down the Crystal River south of Carbondale, Penny Hot Springs sits beside Highway 133, and Avalanche Ranch has tiered pools with cabins.