The Colorado shortlist Hot Springs
Free primitive springs and places with listed starting prices of $25 or less. Check the full adult rate before choosing.
A smaller admission price can leave more room for the rest of a Colorado trip. This collection includes places with a listed starting price of $25 or less, plus primitive springs explicitly marked free in the initial dataset. Overnight lodging rates and Juniper’s unconfirmed public access are excluded.
The lowest listed figure may be a child, youth, senior, or weekday price. Read each place’s price note to see what it covers and confirm the current adult rate. Timed sessions, rental items, and separate areas can also add to the total.
Free primitive pools call for a different kind of preparation. Roads, trails, river levels, legal access, and permits can matter more than admission. A missing price does not mean a place is free.
Aspen, CO
Conundrum Hot Springs sits at 11,207 feet in the Maroon Bells–Snowmass Wilderness, reachable only by an 8.5-mile, 2,500-foot-gain hike up Conundrum Creek Trail from just outside Aspen. Natural pools of varying temperature — averaging around 100°F — reward the backpack with alpine panoramas of the Elk Mountains. Overnight stays require a competitive wilderness permit booked through Recreation.gov, with only 68 campers per night across 23 designated sites.
Penrose, CO
A rustic, no-frills true geothermal spring on 160 acres in the Arkansas River Valley near Penrose — a converted 1924 oil well. It features one large 70-foot soaking pool at 95–98°F plus a hotter source tub near 108°F, with mountain views. Clothing is optional Wednesday through Sunday (swimsuits required on Tuesdays), and the crowd is mostly adults.
Florence, CO
An adults-only (18+) clothing-optional retreat on 10 acres in the Colorado 'banana belt' near Florence, with Front Range views. The centerpiece is one large turquoise mineral pool fed by an 1,100-foot artesian well, drained and cleaned weekly, plus private tubs for rent. Overnight options include vintage Airstreams, tiny homes, and van camping with soaking included.
Eldorado Springs, CO
The historic 1905 swimming pool at the mouth of Eldorado Canyon, reopened in 2025 after a full renovation, fed by the 6,000-year-old Eldorado artesian spring (heated to ~79-82°F in summer). Sandstone canyon cliffs, a grassy creekside lawn, diving board, snack bar and new beer garden make it a classic summer day trip from Boulder/Denver. In winter it runs limited ticketed 'Hot Spring Series' soaking events at 95-100°F.
Pagosa Springs, CO
A budget-friendly, old-west style hot springs resort on Hot Springs Blvd in Pagosa Springs, operating since 1950. It offers a large outdoor mineral pool, an outdoor hot tub, and separate indoor men's and women's bathhouses, with 100% natural undiluted mineral water and no added chemicals. Rooms, kitchenettes, suites, cabins, and a seasonal RV park are on site.
Moffat, CO
Joyful Journey Hot Springs Spa is a wellness sanctuary on the valley floor of the San Luis Valley beneath the Sangre de Cristo Mountains, 32 miles south of Salida. Three flow-through mineral pools (98–108°F) plus hot tubs, a cold plunge, and a dry sauna anchor a contemplative, retreat-oriented property. Lodging ranges from lodge rooms to heated yurts, tipis, and RV/camp sites, with made-to-order breakfast and dinner included for overnight guests.
Ouray, CO
A city-owned, sulfur-free geothermal pool complex in Ouray, originally opened in 1927 and fully rebuilt in 2016–2017. It offers several pools at different temperatures, including an adults-only overlook pool at 102–106°F, plus summer water slides and a fitness center. It has no on-site lodging, but many hotels are within walking distance.
Pagosa Springs, CO
A small, intimate spa in downtown Pagosa Springs, in a Victorian-style building known for rooftop soaking tubs overlooking the San Juan River and mountains. No reservations are needed for soaking; it is one of the lower-priced soaks in town in the supplied dataset.
Carbondale, CO
Penny Hot Springs is a set of free, primitive rock-walled pools on the west bank of the Crystal River along Highway 133 between Carbondale and Redstone. Soakers rearrange river rocks to blend 133°F source water with cold river flow, dialing each pool's temperature to taste. Owned by Pitkin County since 1991, it is a beloved roadside stop best visited when river levels are low.
Pagosa Springs, CO
Piedra River Hot Springs is a cluster of primitive rock 'tubs' built into the banks of the Piedra River in the San Juan National Forest, west of Pagosa Springs. Reaching them takes a steep 1.5-mile descent from the Sheep Creek Trailhead off First Fork Road — the climb back out is the real workout. Free, clothing-optional, and dog-friendly, it is one of southwest Colorado's most rewarding wild soaks.
Kremmling, CO
Radium Warm Springs is a small primitive pool on the banks of the Colorado River just upstream of Gore Canyon, about 15 miles southwest of Kremmling. River rocks wall off a warm pocket — typically 85–95°F — from the cold current. Access rules have shifted: the old Mugrage/CPW social trail is closed for wildlife habitat protection, so hikers now use the Warm Springs Trail from the Warm Springs Road parking area off Trough Road.
Hooper, CO
A family-run artesian hot pool (kept at 98-100°F) on the San Luis Valley floor with big views of the Sangre de Cristo mountains, minutes from Great Sand Dunes National Park. The main 50x100-ft pool is family-friendly; a separate adults-only Greenhouse offers hotter soaking pools, a sauna and a bar. On-site lodging includes RV sites, tent sites, glamping cabins and a family hacienda, plus the Mile Deep Grille restaurant.
Steamboat Springs, CO
Rustic natural hot springs set along Hot Springs Creek in Routt National Forest, about 7 miles outside Steamboat Springs. Stone-masonry pools fed by mineral water sit creekside in a largely off-grid, wilderness setting with minimal lighting at night. It also offers overnight cabins, a covered wagon, and a train caboose for extended stays.
Villa Grove, CO
Valley View Hot Springs is a rustic, off-grid hot-springs sanctuary near Villa Grove managed by the nonprofit Orient Land Trust. Six natural pools (roughly 80–101°F) and a sauna are scattered across a wilderness preserve surrounded by BLM land — two near the parking area, four along a short hiking trail. The entire property is clothing-optional and all-ages, with daily guest numbers capped to protect the land.
Gunnison, CO
Waunita Hot Springs Ranch is a family-run dude ranch 26 miles east of Gunnison, centered on a large 95–102°F geothermal pool and two smaller hot tubs beneath Tomichi Dome. Beyond soaking, the ranch offers horseback riding, ATV trails, fishing, and home-cooked meals — a classic Colorado ranch vacation. Day-use swimming is available, but the ranch often books out for private groups, so calling ahead is essential.
Glenwood Springs, CO
Natural geothermal vapor caves, in continuous operation since 1893 — geothermal water flows through the cave floor, creating 110–112°F steam chambers rich in 34 minerals. It is also a full-service day spa with private mineral baths, massages, wraps, and a salon. Reservations are required for all services and cave access.
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