Quick FactsOverview
Overview
Penny Hot Springs is a small cluster of rock-lined soaking pools beside the Crystal River, just off Highway 133 near the old mining town of Redstone. It is one of Colorado's classic pull-off hot springs: no gates, no buildings, no staff. The pools are built from river stones and are rebuilt or reshaped over time by volunteers and changing water.
The spring water mixes with the river, so the experience depends on season and runoff. In lower flow periods, you can usually find a few pockets of warmer water along the bank, with one or two pools deep enough to sit in. During high runoff, the river can push into the pools or wash them out entirely, and the temperature can drop fast.
The setting is straightforward and a little exposed. You soak with the sound of the river in a narrow valley under granite cliffs, with traffic nearby. It is a good stop for a short soak between Carbondale and Marble, not a place to plan a full spa day.
Location & Access
Location & Access
Penny Hot Springs sits directly along Highway 133, roughly between Carbondale and Redstone. Access is via a roadside pull-off and a short walk down to the riverbank. There is no formal trail, just use paths that can be dusty, icy, or muddy depending on weather. River stones near the water are uneven and can be slick.
Parking is the main constraint. Pull-offs are limited, and the highway is narrow with fast traffic. Park fully off the roadway and use extra caution when crossing or walking near the shoulder. If the area is busy, it can be smarter to skip it rather than force a risky parking situation.
Bring simple gear: sturdy sandals or water shoes, a towel, and a warm layer for getting out, since the valley can cool quickly. There are no toilets, changing rooms, or trash service at the pools. Plan to pack out all waste. Winter visits are common, but ice forms on rocks and steps, and the walk down can be slippery, so take your time and use traction.
Suitability & Accessibility
Suitability & Accessibility
This is best for travelers who are comfortable with undeveloped riverbank soaking and quick in-and-out visits. If you want predictable temperatures, private space, or facilities, choose a developed hot springs pool instead. Penny is a good fit for road trippers who can accept that some days it simply will not soak well due to river flow or damaged pools.
Family suitability is limited. The pools sit immediately beside a cold, fast-moving river, with uneven footing and no barriers. Even strong swimmers can be surprised by slick rocks and current. For most families with young kids, the risk and lack of facilities make this a poor choice.
Wheelchair access is not realistic. The route from the pull-off to the water involves rough ground, informal paths, and rock steps. Anyone with balance or mobility concerns should consider a facility with paved decks and controlled pool edges.
Clothing practice varies because there is no posted policy. Many visitors wear swimsuits, some do not. If you go, aim for a low-impact, respectful visit and be prepared to leave if the scene feels crowded or uncomfortable.
Safety & Etiquette
Safety & Etiquette
River conditions are the primary hazard at Penny Hot Springs. During snowmelt and after heavy rain, the Crystal River rises quickly, runs cold, and can surge into the pools. In high flow, do not try to rebuild pool walls or sit in areas where the current can grab you. If the water is pushing through the pools, skip the soak. Even in calmer seasons, rocks at the edge are slick and footing is uneven, so move slowly.
Hot spring water at the source can be much hotter than mixed pool water. Test with a hand and enter gradually. Keep sessions short, especially in winter when the contrast between hot water and cold air can stress your system. If you feel lightheaded, get out, cool down, and hydrate. Alcohol and hot soaking do not mix well here because there is no supervision and the river is close.
Etiquette is simple: keep it quiet, give others space, and leave no trace. Do not use soap or shampoo in the pools or river. Avoid glass containers. Pack out everything, including small trash. Respect privacy and do not photograph strangers at close range. If you bring a dog, keep it under control and away from crowded soaking areas, and be aware that hot water and winter ice can be hard on paws.
Finally, be a good neighbor to the road. Park safely, keep noise down, and do not block gates or driveways. This is a fragile kind of access that depends on people acting like they want it to remain open.




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