The Colorado hot springs road trip: 35 soaks in one mountain loop

The numbers: why Colorado wins the road trip

The short version of the data, before you start planning:

• 36 springs, 35 open. One — Raspberry Hot Springs near Idaho Springs — is temporarily closed, so it sits off the loop for now.
• 13 are free. Conundrum, Rainbow, Charlotte, Penny, Pinkerton, Piedra River, Cebolla, South Canyon, Sulfur, Cañon City, Salida, Yampah, and Radium Warm Springs carry no entry fee in our data. That's more than a third of the state, and it's the cheapest way to do this trip. Radium is the warm one: the BLM puts the riverside pool at about 80°F after cold river water mixes in, and the pool floods at high water.
• 6 are clothing-optional, two of them after dark only: Strawberry Park and Orient Land Trust go clothing-optional after dark; Conundrum, Orvis, Desert Reef, and Dakota are clothing-optional all day.
• The temperature spread is wild. Aqua Hot Spring near Nathrop averages 181°F (scalding — this is water you respect, not water you plunge into), Waunita averages 176°F, while Pinkerton and Rainbow sit around 90–100°F. Our temperatures are averages from each spring's recorded data, not guarantees at any given visit.

The route at a glance

The loop runs six to eight days if you soak generously, and it's a genuine ring: Denver → Steamboat → Glenwood → Ouray → Durango/Pagosa → the San Luis Valley → Buena Vista/Salida → Hot Sulphur Springs → Idaho Springs → Denver. Almost every stop sits on or near a paved road, which means you can do the whole thing in a regular car with two notable exceptions noted below.

• Day 1 — Steamboat: Strawberry Park + Sulfur Springs, on the Yampa River's terms.
• Day 2 — Glenwood: Four springs in one town, plus Penny Hot Springs down the Crystal River.
• Days 3–4 — Ouray and the San Juans: Ouray's trio, Orvis in Ridgway, then over the Million Dollar Highway to Durango.
• Days 5–6 — Durango, Pagosa, and the southwest: Resorts, the Piedra River, and — if your legs are willing — Conundrum.
• Day 7 — The San Luis Valley and the Arkansas corridor: Orient, Joyful Journey, then the dense Buena Vista/Nathrop/Salida cluster.
• Day 8 — Home via the front range: Hot Sulphur Springs, Idaho Springs, back to Denver.

Steamboat Springs: start where the river steams

Steamboat gives you both sides of Colorado soaking within a few miles of each other. [Strawberry Park Natural Hot Springs](/colorado/steamboat-springs/strawberry-park-natural-hot-springs) (clothing-optional after dark) is the classic: rustic pools, a 4.3 rating, and $30 per adult, cash only, by two-hour reservation. The 147°F figure in our data is the source temperature from NOAA's thermal springs survey. Creek water blends the pools down, and visitor guides put them at about 102–106°F. The last two miles of road are unpaved, steep and winding. From November 1 to May 1, Routt County's traffic code requires chains or 4WD with snow tires on the county road when conditions are dangerous, and the operator requires 4WD with snow tires for the whole period. Two-wheel drive isn't allowed even with chains, so without the right vehicle you book a shuttle. This is the one spot on the loop where a regular sedan is most likely to embarrass you. The payoff is one of the best atmospheres in the state.

[Sulfur Springs](/colorado/steamboat-springs/sulfur-springs) (102°F, free) is the counterweight: a humble, free soak near town. Start or end your Steamboat day here depending on how much money you want to spend on water.

Glenwood Springs: four soaks, one town

Glenwood is the densest hot springs town on the loop — four springs, and you can genuinely do two a day without moving your car much. The [Glenwood Hot Springs Pool](/colorado/glenwood-springs/glenwood-hot-springs-pool) (124°F) is the famous one: a historic resort pool complex with lodging, spa, and food on-site. [Iron Mountain Hot Springs](/colorado/glenwood-springs/iron-mountain-hot-springs) (108°F) is the more curated option — reservations required, restrooms and showers, food on-site, and a 21+ Premier Access tier.

The free counterweights are real here too. [South Canyon Hot Springs](/colorado/glenwood-springs/south-canyon-hot-springs) (118°F, free, short walk from the road) is a local favorite tucked along the Colorado River — small pools, no facilities, bring everything you need. [Yampah Spa & Salon](/colorado/glenwood-springs/yampah-spa-salon) (124°F) is listed as free in our data: a quirky downtown stop. Check the listing page before counting on the free tier — pricing here has been known to change.

From Glenwood, the Crystal River valley south toward Redstone is worth the detour for [Penny Hot Springs](/colorado/redstone/penny-hot-springs) (133°F, free): a free riverside soak south of town, easy to miss, easy to love. If you're continuing toward Aspen, this is also your approach to the trip's biggest commitment: [Conundrum Hot Springs](/colorado/pitkin-county/conundrum-hot-springs) (100°F, free, clothing-optional) requires an 8.5-mile hike into the Maroon Bells, climbing 2,500 feet with three creek crossings — a 17-mile round trip for a single soak. It's the longest hike-in on this loop and the one stop that demands real wilderness planning: permits, bear storage, and weather that can turn in July. Only attempt it if you're a confident backpacker.

Ouray and Ridgway: the Switzerland of America soaks

The San Juans are the trip's scenic peak, and the soaking matches. [Ouray Hot Springs](/colorado/ouray/ouray-hot-springs) (156°F) is the town's signature: a big public pool complex. [Wiesbaden Hot Springs Hotel & Spa](/colorado/ouray/wiesbaden-hot-springs-hotel-spa) (108°F) is the boutique counterpoint — a small hotel spa, intimate and quiet. Swimwear is required in the outdoor pool and vapor cave; only the private Lorelei pool is clothing-optional. A third Ouray entry, the Ouray CO Hotel & Hot Springs by Twin Peaks Lodging (156°F), serves the lodging trade.

A few miles north in Ridgway, [Orvis Hot Springs](/colorado/ridgway/orvis-hot-springs) (112°F, clothing-optional, 4.7 rating) is one of the highest-rated clothing-optional resorts in our data — beautifully kept pools and a strict, respectful culture.

Durango and Pagosa Springs: the southwest swing

South over the Million Dollar Highway, Durango offers the full-service [Durango Hot Springs Resort & Spa](/colorado/durango/durango-hot-springs-resort-spa) (120°F, 4.5) and the free [Pinkerton Hot Springs](/colorado/durango/pinkerton-hot-springs) (90°F): a roadside travertine mound, lukewarm and humble, free and worth ten minutes.

Pagosa Springs is a resort town built on its water. [The Springs Resort](/colorado/pagosa-springs/the-springs-resort) (131°F, 4.7) sits directly on the San Juan River — lodging, spa, and food on-site, the premium stop in this corner. [Overlook Hot Springs](/colorado/pagosa-springs/overlook-hot-springs) ($$, 100°F) is the cheaper in-town alternative. And then there's the wild card: [Rainbow Hot Springs](/colorado/pagosa-springs/rainbow-hot-springs) (100°F, free) requires a hike of about 5.3 miles up the West Fork Trail in the Weminuche Wilderness (about 7.5 in winter, when the road is closed to cars). It's Conundrum's quieter sibling — remote and a serious commitment.

The area's free options round out the southwest: [Piedra River Hot Springs](/colorado/piedra-river-hot-springs/piedra-river-hot-springs) (108°F, free, short walk) along the Piedra River, and [Cebolla Hot Springs](/colorado/cebolla-hot-springs/cebolla-hot-springs) (106°F, free) — the latter sits at a low 2.3 rating in our data, which is honest signal: rough, remote, and not for everyone.

The San Luis Valley and the Arkansas River corridor: the money stretch

Swing north through the San Luis Valley for two very different stops. [Orient Land Trust / Valley View Hot Springs](/colorado/moffat/orient-land-trust-valley-view-hot-springs) (106°F, clothing-optional after dark, 4.7) is a nature-preserve hot springs run by a conservation land trust — soaking built around the place's mission. [Joyful Journey Hot Springs Spa](/colorado/moffat/joyful-journey-hot-springs-spa) (140°F, short walk) is the more conventional spa stop nearby.

Then comes the densest free-soak corridor on the whole loop. [Charlotte Hot Springs & Botanical Gardens](/colorado/buena-vista/charlotte-hot-springs-botanical-gardens) (136°F, free, 4.8) is the headline: a free soak with its namesake botanical gardens, and the highest-rated free spring in our Colorado data. [Salida Hot Springs Aquatic Center](/colorado/salida/salida-hot-springs-aquatic-center) (100°F, free) is a town pool with genuine hot springs water — the cheapest soak in Salida.

The Nathrop trio shows the full price spectrum within five miles: [Aqua Hot Spring](/colorado/nathrop/aqua-hot-spring) (181°F, 5.0 — our highest-rated Colorado spring) is a small soak at the hottest average temperature in the state; [Mount Princeton Hot Springs Resort](/colorado/nathrop/mount-princeton-hot-springs-resort) (133°F, clothing-required) is the full-service family resort of the cluster; [Treehouse Hot Springs](/colorado/nathrop/treehouse-hot-springs) (104°F, 4.8) is the boutique option. [Cottonwood Hot Springs Inn & Spa](/colorado/buena-vista/cottonwood-hot-springs-inn-spa) (136°F, clothing-required) rounds out Buena Vista. North of Gunnison, [Waunita Hot Springs Ranch](/colorado/gunnison/waunita-hot-springs-ranch) (176°F, 4.9) is worth knowing about — one of the hottest averages in the state at a ranch resort — though it's a genuine detour off the loop.

The corridor's clothing-optional stops: [Desert Reef Hot Spring](/colorado/florence/desert-reef-hot-spring) (clothing-optional) near Florence, [Dakota Hot Springs](/colorado/penrose/dakota-hot-springs) (108°F, clothing-optional, $), and the free [Cañon City Hot Springs](/colorado/canon-city/canon-city-hot-springs) (104°F) for a no-frills town soak.

The front range: home stretch

Two stops close the ring. [Hot Sulphur Springs Resort & Spa](/colorado/hot-sulphur-springs/hot-sulphur-springs-resort-spa) (111°F, clothing-required) is the historic one — a hillside resort complex with lodging, spa, food, and camping, and a relaxing final full day. [Indian Hot Springs](/colorado/idaho-springs/indian-hot-springs) (115°F) in Idaho Springs is the last soak before Denver. One housekeeping note: [Raspberry Hot Springs](/colorado/idaho-springs/raspberry-hot-springs) in Idaho Springs is currently listed as temporarily closed — skip it until the listing page says otherwise.

Down in the southwest corner, not on the main loop but worth a night if you're doing the Four Corners: [Dunton Hot Springs](/colorado/dolores/dunton-hot-springs) (108°F, 4.7) — the splurge of splurges.

Doing it on the cheap: the 13-free strategy

The most useful thing our data says about Colorado is that 13 of 36 springs are free. A loop built around the free tier — Charlotte, Penny, Pinkerton, South Canyon, Sulfur, Cañon City, Salida, Conundrum, Rainbow, Piedra River, Cebolla, Yampah, and Radium Warm Springs — plus a paid resort or two where it counts (Strawberry Park, Orvis, The Springs Resort) keeps the whole trip's soaking budget in the low hundreds. Radium Warm Springs is the BLM's name, and the temperature to plan on is about 80°F, not a hot soak. Free soaks mean no reservations and no hours, but also no changing rooms, no staff, and no promises — bring your own water, towel, trash bag, and a willingness to share the pool with whoever found it first.

Practical notes for the loop

• Access is easy — mostly. Nearly every stop on this loop sits on or near a paved road. The exceptions our data flags: Strawberry Park (last two miles unpaved; 4WD with snow tires required from November 1 to May 1, or take a shuttle), Conundrum and Rainbow (hike-in, about 8.5 and 5.3 miles one way respectively — Conundrum is a backpacking trip, and Rainbow is a long day at minimum). Radium Warm Springs is a third access case: the BLM says not to start from the Radium Recreation Area or park on Radium Road, and to use the trailhead at the end of Warm Springs Road. Warm Springs Trail is foot travel only.
• Clothing-optional norms. Six springs allow it; two only after dark. The etiquette guide covers the norms, but the short version is: at places like Orvis and Orient, the culture is respectful and non-sexual, and your behavior is the price of admission.
• Temperature is an average, not a promise. Wild pools and even resort source pools fluctuate. Aqua's 181°F average and Waunita's 176°F are reminders that "hot" here includes genuinely scalding water — check with a thermometer before you get in, skip any pool you can't check safely, ease in, never jump in, and keep kids' and pets' distance from source pools.
• Winter changes everything. Snow makes the high-country stops (Strawberry Park, Conundrum, Rainbow) much harder — Conundrum and Rainbow become serious winter mountaineering — while the front-range and low-elevation resorts stay accessible. The winter guide covers the cold-weather playbook in full.
• Check the listing pages. Our directory tracks each spring's operating status, and one of the 36 (Raspberry) is closed right now. Resorts change prices and hours seasonally. Verify before you drive.

Colorado's ring works because the state compresses the entire hot springs spectrum into one loop: the 90°F roadside mound and the 181°F appointment soak, the free river pool and the ghost-town resort, the 8.5-mile backpack and the parking-lot bathhouse. Do it in a week, do it in a season, or just keep the ring in your back pocket — it's the one hot springs trip in America where the loop never has to end.