Glacier Hiking & Geothermal Cave Pools Tour

Snow can meet steam in one Colorado day. This 8-hour outing pairs the short but high-altitude hike to St. Mary’s Glacier with a soak in historic geothermal cave pools, then adds pizza and free time in Idaho Springs. I like the small maximum group of four, and I like that crampons, sleds, goggles, snacks, water, parking, and transportation are included.

The main catch is the starting elevation, about 10,200 feet, which can make a 1.5-mile hike feel much harder than its distance suggests. The hot springs caves are also adults-only for anyone 16 and under, and lunch at Beau Jo’s Pizza is not included.

Five things to know before you book

• The hike begins high: St. Mary’s Glacier starts around 10,200 feet above sea level, so altitude matters more than the short mileage.
• The group is tiny: A maximum of four people allows guides such as Tyler, Dan, Matt, Trey, Bree, Ariel, and others to adjust the pace and route.
• Winter gear is supplied: Crampons, sleds, and ski goggles are available when conditions call for them.
• The hot springs are unusual: Indian Hot Springs has gender-specific rock caves with walk-in mineral-water tubs ranging from 104 to 112 degrees.
• The day ends with Colorado comfort food: Beau Jo’s famous Colorado-style pizza in Idaho Springs is a highlight, but you pay for lunch separately.
• The package covers the practical bits: Transportation from Denver, parking, snacks, water, and hot springs admission are included.

Why this Denver day trip works so well

I like this tour because it gives you three very different Colorado experiences without asking you to plan the connections yourself. You get mountain scenery, a hot mineral soak, and a small historic town in one day. The order also makes sense: exert yourself first, relax next, then eat.

The small group is a real advantage. With no more than four people, the guide can slow down for someone adjusting to the altitude, take a scenic side route, or spend more time on photos. Several guides received praise for patience and flexibility, including Tyler, Dan, Matt, Trey, Bree, Ariel, Briana, and Breanne.

This is not simply a ride to a viewpoint followed by a quick stop at a spa. The hike asks you to move through Colorado forest and snow conditions, while the hot springs have an unusual setting inside caves cut into the rock. You also have time in Idaho Springs rather than racing straight back to Denver.

The trade-off is that the day is active and altitude-sensitive. The tour description calls for moderate physical fitness, and that is fair. The trail is described as one of the easier Colorado hikes, but easy at low elevation and easy at 10,200 feet are not the same thing. If you come from sea level, you may notice the altitude quickly.

St. Mary’s Glacier: short mileage, serious elevation

The first stop takes about two hours, including the out-and-back hike and time to enjoy the views. The trail covers about 1.5 miles round trip, ascending through Colorado forest toward the glacier and its mountain views.

The distance makes this appealing to people who want a mountain outing without committing to an all-day trek. You can reach snow and glacier scenery without spending the entire day on a long trail. In summer, the remaining snow can be especially striking, with one visitor describing the pleasure of touching snow despite warm conditions elsewhere.

Do not use the mileage as your only measure of difficulty. The trail begins at roughly 10,200 feet, and that number should be printed in your mental itinerary. A short climb can leave you breathing hard when your body has not adjusted. One person was unhappy because the elevation was not clear at the time of booking, so treat this as a high-altitude outing, not a casual city walk.

Your guide should help set the pace. Tyler was praised for teaching safe high-altitude hiking and for using a short mindful meditation to help one participant manage the climb. Dan and Matt were also praised for attentive pacing, while other guides adjusted the route to match the group.

Snow and ice can change the feel of the trail. Crampons are included to provide grip, and sleds and ski goggles are available if needed. Those extras matter because you do not have to rent or pack every piece of winter equipment yourself. Still, supplied gear does not remove the need for sensible clothing and shoes.

Guides may choose a quieter route instead of following the most direct path. One outing used a scenic route with fewer people until the group reached the top. That is one of the pleasures of booking a small group: you are not locked into a large bus schedule or a single rigid pace.

Plan on weather changing. Hail has interrupted the end of at least one outing, and Colorado conditions can shift quickly. The tour requires good weather, so poor conditions may lead to a new date or a full refund. During the hike, your guide will be the best source for decisions about pace and route.

Indian Hot Springs caves: the right reward after the hike

After the mountain portion, the tour gives you one hour at Indian Hot Springs. The facility’s caves were cut into solid rock between 1903 and 1911, creating a setting that feels quite different from an ordinary outdoor pool.

Inside each cave are large sunken walk-in tubs filled with naturally hot mineral water. Temperatures range from 104 to 112 degrees, so this is a very warm soak, not a mildly heated swimming pool. Some people may find the hotter water intense, especially after exercise, so take your time and listen to your body.

The caves are separated by gender, and bathing suits are optional. Children 16 and under are not allowed in the caves. These rules are important to know before you book, particularly for families planning the day around a shared pool experience. This is not a mixed, all-ages facility.

The hot springs are included in the tour price, which improves the value of the package. You get the admission without having to arrange a second booking, and the stop comes at a useful point in the day. After the cold or effort of the glacier hike, warm mineral water can feel like a proper reset.

Bring flip-flops if you have room. One person specifically wished they had them, and they are practical for moving around a wet bathing area. The tour provides water and snacks, but lunch is separate, and the supplied information does not say that towels or swimwear are provided. Pack what you need for the soak.

Expect the caves to be more about atmosphere and relaxation than polished resort luxury. The experience is unusual because of the rock chambers and the natural mineral water, but one person found the caves and pools only mediocre. If you want a modern spa with extensive facilities, this may not be your ideal stop. If you like historic, distinctive places and a warm soak after a hike, it fits the day well.

Idaho Springs and Beau Jo’s pizza

The final stop is Idaho Springs, where you have about two hours for food and time in town. Lunch at Beau Jo’s Pizza is not included, but the pizza is repeatedly singled out as a major pleasure of the day.

Beau Jo’s is known for Colorado-style pizza, and the timing is sensible. You have just completed the hike and spent time in the hot springs, so a substantial meal should land well. One useful tip: bring a container if you think you will have leftovers. The portions can be generous enough to make that worth planning for.

Idaho Springs also gives the day a local-town pause rather than sending you directly back to Denver. You can explore, though the exact amount of shopping or wandering depends on the schedule and the group. One person wanted more time in town for shopping, so if browsing local stores is your main goal, set your expectations modestly.

I like this part of the tour because it rounds out the experience. The glacier supplies the scenery, the caves provide recovery time, and the pizza adds a relaxed Colorado food stop. None of those elements needs to carry the entire day by itself.

Transportation, timing, and group size

The tour begins at 8:00 a.m. outside Whole Foods Market at 1701 Wewatta Street in Denver and returns to the same meeting point. Public transportation is nearby, which makes the downtown departure useful if you are staying without a car.

Transportation, parking, water, snacks, and admission to the hot springs are included. That removes several small costs and planning jobs, especially parking near the trail and arranging a way to reach the mountain and Idaho Springs.

The vehicle may be a smaller SUV rather than a large coach. One person expected more room but found the drive comfortable, with an easy interstate commute and a useful bathroom stop before the hike. If you prefer a roomy bus with a large onboard group, this is not that style of outing. The smaller vehicle is part of the small-group format.

The maximum group size is four people. That makes a difference when altitude slows someone down or when the guide needs to explain gear. It also creates a more social day for solo visitors. Several solo participants described making friends and enjoying the personal feel of the outing.

The experience is offered in English and uses a mobile ticket. Confirmation arrives when you book. These are simple details, but they make the morning easier when you are trying to meet the vehicle on time.

What the guides add to the day

The guide is central to this experience. You are not only being driven from one stop to another. Your guide handles the mountain pace, explains how to manage the conditions, helps with gear, and shapes the day around a very small group.

Tyler received especially strong praise for communication, patience, outdoor skills, and his ability to tailor the day. Dan was praised for being attentive and well informed, while Matt helped set an appropriate hiking pace. Trey was described as kind, patient, motivating, and good at bringing a group together.

Bree, Ariel, Briana, and Breanne also received praise for making people comfortable and keeping the day personal. One guide gave a solo participant a Polaroid photo, a small touch that turned into a lasting keepsake.

You should still ask questions at the start of the tour. Tell the guide if you are worried about altitude, need a slower pace, or have a strong preference for hiking, hot springs, food, or town time. The format is flexible enough that clear communication can improve your day.

Value, limitations, and who should book

No price is provided here, so I cannot judge the exact cost against competing tours. I can judge what the package covers. Transportation, parking, snacks, water, glacier gear, and hot springs admission are bundled together, while lunch remains your responsibility.

That is useful value if you would otherwise rent a car, pay for parking, buy snow equipment, and arrange a separate hot springs visit. The small group and guide support also matter more here than on a simple sightseeing drive. The day is not cheap merely because it includes several stops, but the included services make the cost easier to justify.

I would recommend it most strongly to active visitors who want a manageable mountain outing and do not want to handle Colorado driving or trail logistics. It also suits solo visitors, couples, and small families with older children who can manage the altitude and the cave rules.

I would be cautious if you have little experience with high elevation, dislike cold or changeable weather, or want a long, leisurely visit to Idaho Springs. The hike is short, but the altitude is real. I would also skip it for a family mainly interested in a shared hot springs pool, since children 16 and under cannot enter the caves and the bathing areas are gender specific.

Cancellation is free up to 24 hours before the start time for a full refund. Poor weather or an insufficient number of bookings can also cancel the outing, with a new date or full refund offered.

Should you book this Colorado day trip?

Book it if you want a compact taste of Colorado that combines a glacier hike, an unusual cave soak, and excellent pizza. The strongest reasons are the small group, included gear, flexible guides, and the smart transition from exertion to relaxation.

Before paying, make sure the 10,200-foot starting elevation suits you. If it does, this is a well-balanced day outside Denver, with enough adventure to feel earned and enough comfort to keep you smiling on the ride home.

FAQ

Where does the tour start and end?

It starts at 8:00 a.m. at Whole Foods Market, 1701 Wewatta Street, Denver, Colorado 80202. The tour ends back at the same meeting point.

How long does the experience last?

The full experience lasts approximately eight hours.

How far is the St. Mary’s Glacier hike?

The hike is about 1.5 miles round trip and takes part of the two-hour stop at St. Mary’s Glacier.

How high does the hike begin?

The hike begins at about 10,200 feet above sea level.

Are hiking aids provided?

Yes. Crampons are included, and sleds and ski goggles are provided if needed.

Is admission to Indian Hot Springs included?

Yes. Admission to the hot springs is included in the tour.

Can children enter the hot springs caves?

Children 16 and under are not allowed in the caves. The caves are separated by gender, and bathing suits are optional.

Is lunch included?

No. Lunch is not included, though the tour visits Beau Jo’s Pizza in Idaho Springs for Colorado-style pizza.

How many people can join the tour?

The tour has a maximum of four participants.

What happens if weather cancels the tour?

If poor weather causes a cancellation, you will be offered a different date or a full refund. A full refund is also available when you cancel at least 24 hours before the start time.