Ecuador - Chimborazo Climb


Program Structure

Climbing to over 20,000 feet on Chimborazo is a significant undertaking. To join a climbing team for this ascent and have a good chance for success, you will need to know the fundamentals of glacier climbing, be in very good physical condition, and be well acclimatized to at least 18,000 feet within seven days of the climb.  
Most climbers prepare by joining our ten-day Cayambe-Cotopaxi program.  In addition to having an opportunity to thoroughly acclimatize, you will also learn or refresh glacier climbing skills and raise your fitness level as you hike two 13,000 and 15,000-foot peaks and then make ascents of two very beautiful 18,000-foot summits.

Trip 1: Cayambe and Cotopaxi Skills Expedition. This 10-day expedition is a great trip in itself and a perfect way to prepare for the big undertaking that Chimborazo constitutes.  During this incredible trip, you will spend time exploring the towns, lakes, markets and mountains of the Ecuadorian highlands.  

After beginning your acclimatization in 9350-foot Quito, you will continue to increase it by hiking through beautiful páramo (subalpine grasslands and open meadows) on your way to fun rock scrambles to the summits of 13,776-foot Pasochoa and 15,413-foot Rucu Pichincha.  You'll then travel to Cayambe, where you'll learn or review glacier skills before attempting the 18,997-foot summit. After a full day of rest, you will then make a two-day climb of remote and beautiful Cotopaxi (19,348 ft / 5897 m). Accommodations: hotel, hacienda, lodge, and hut.

Trip 2: Chimborazo. Once acclimatized, you will spend four days approaching, establish a high camp, and climbing Chimborazo (20,703 / 6310 m).  Note: You can also add this four-day extension to the end of our Antisana and Illiniza Climb. Accommodations: lodge, camping, and hotel

Ecuador, Chimbo - Mountain

The vertical relief of Chimborazo is stunning in contrast to the flat plains surrounding the peak.  AAI Collection

Trip Overview

Many people have said, "this trip has it all." The rewards range from rich cultural experiences, great hikes, and aesthetic landscapes, to excellent food, beautiful haciendas, instruction in glacier climbing skills, an ideal introduction to high altitude climbing, high quality snow and ice climbing, and amazing summit views (from the Amazon Basin to the Pacific lowlands).

In sum, the variety and beauty on this trip are awe-inspiring and the personal rewards are of such variety and depth that this is commonly one of those experiences that people describe as "a trip of a lifetime." You can also absolutely guarantee that categorization if you add on a five to seven-day boat-based journey through the Galapagos Islands after your climbs. Many who have made ascents with us here have enjoyed ending their Andean journey with a few days in that wonderful archipelago off the coast of Ecuador.

Zero Carbon Footprint Expedition

Climbers For The Climate

This expedition has a zero carbon footprint. Through AAI's Climate Initiative, the Institute pays to offset all carbon emissions incurred by the guides and clients on each trip, including emissions from flight, local transportation, electricity in hotels, and fuel burned to cook in the mountains. To learn more about how this works and AAI’s dedication to environmental protection, click here.


We take a conservative approach to acclimatization, and the wisdom of our itineraries is seen every year in the safety record of our trips and the tremendous success rate of our climbers. We have been guiding the high altitude peaks of Ecuador since 1977, and the days we allocate to acclimatization are based on our decades of experience. Though in our first trips we allocated nine days for climbing Cayambe and Cotopaxi, for more than two decades we have been climbing on a ten-day itinerary because we found people are much more comfortable at altitude and enjoy a summit success rate slightly over 30% higher than on a nine-day itinerary. You will find other guide services that offer eight and nine-day trips. Our experience tells us that if you subscribed to that pace, you will save a little money and vacation time but cut your summit success rate by 30% - 50%. Climbing at altitude is quite challenging, and it is important to stack the odds for success in your own favor.


COVID-19 Itinerary Notes:

The observations of our staff in Ecuador indicate that the citizens of the country have achieved a high rate of compliance with requirements for face coverings and social distancing. As of April 2022, 89% of Ecuador's population has been vaccinated. 

Ecuador-Specific Protocols:

Lodges: The observations of our staff in Ecuador indicate that the citizens of the country have achieved a high rate of compliance with requirements for face coverings, social distancing and vaccination. Ecuador became one of the leading countries in South America to have COVID 19 under control. However, all Hotels and Lodges we use follow strict COVID 19 Protocols. If you wish to reserve your own room and/or tent, please let us know. The cost for single accommodations is: $490 for the Cotopaxi Skills Expedition and an additional $160 for the Chimborazo climb. There is no charge for a single tent.

Ecuador - Chimborazo Climb

Structure and Routes

Ascent of Chimborazo (20,703 ft / 6310 m) - 5 Days

Ecuador, Chimbo - Clouds

Looking up at Chimborazo from basecamp.
Jason Martin

Chimborazo is Ecuador's highest peak. It is a massive, five-summited mountain rising nearly 11,000 feet above Ecuador's central valley in the western of the country's two parallel cordillera. It is visible from Colombia in the north, from near the Peruvian border in the south, and from far out on the Pacific Ocean. This is a much more complex volcanic peak than most all others of its type, showing many faces that offer a wide range of challenges to alpine climbers.

Routes On Chimborazo

Almost everyone who has climbed Chimborazo has done so by one of four routes on the mountain's southeast side: The Whymper Route, the South Ridge, the Thielman Glacier direct, and the Thielman Glacier approach to the South Ridge route (the last two pioneered by AAI guides in the late 1970s). More recently and for a period of several years, those routes fell out of shape because of sequential seasons of low snowfall and warmer temperatures which combined to create rock fall issues. In that period AAI moved to the north face on another route that AAI guides established in 2007.

In 2011-2014 we returned to the southeast side of the mountain. Those routes had been in better shape because of good snowfall since October 2010. Also, Tungurahua, an active volcano in Ecuador's eastern cordillera, has been in an intermittent but fairly steady state of eruption for several years, and the ash that it has thrown into the atmosphere has been deposited in significant amounts on Chimborazo's north face, accelerating snow melt and making the route extremely icy. With belays required on a large percentage of its many pitches, the north face is not currently a practical option. 

However, climate change has continued to result in melting ice and poor conditions on the normal route on the southeast side. In 2014, AAI guides took part in a successful expedition to find a new safe route to the summit. This new route, which we will return to in 2015, leaves from the Plaza Roja, near the Carrel Hut (currently closed for renovations) and climbs the Stübel Glacier. The Stübel Glacier route not only provides less risk but also more adventure, as we will be camping rather than using mountain refuges. We will employ porters to carry tents and water to camp, while climbers will carry some group and personal gear. 

Our Climb

After our climb of Cotopaxi, we return to our hacienda for another refreshing night in the 9000-foot (2750 m) central valley. The next morning we drive up Chimborazo's flank to reach a small lodge at 13,200 feet (4023 m). It sits in picturesquely on a grassy plain below Chimborazo and allows us to enjoy a good rest day and views of the altiplano surrounding Chimborazo and nearby Carihuairazo (also known as Chimborazo's Wife). The high elevation keeps our ongoing acclimatization robust and is another perfect intermediate step up from the central valley as we prepare to move to the hut on Chimborazo.

Ecuador, Chimbo - Hut

The historical Whymper Hut provides welcome relief from the elements while on Chimborazo.  AAI Collection

The next morning, we make a short drive through grasslands to the south side of the mountain and then continue higher to the Plaza Roja (15,914 ft / 4,852 m) located close to the Carrel hut. From there, it takes us about two hours to walk to the Stübel Camp (16,564 ft / 5,050 m) where we spend the afternoon preparing for the climb the next day. Climbers help carry equipment to camp, while porters carry the tents and water. 

Of our days spent in Ecuador prior to this summit climb, seven are normally at 15,250 feet (4630 m) or higher, and by this point in the itinerary, climbers should be very well acclimatized. Though it is a long climb, these factors have brought a high rate of success to our climbing teams.

Starting the climb at about midnight, we follow the Stübel glacier until it joins the Castle Saddle (18,044 ft / 5,500m). This new variant to the normal Castle Ridge route, free from rock fall, makes it a much safer line to the top. From the Stübel Camp it normally takes six hours to get to the Whymper summit. By the time we reach the 18,500 foot level (5640 m), we will have surmounted most of the technical challenges on the mountain, and on the remainder of our route we will ascend compact and moderately angled snow. The summit crater area is a vast one that is normally covered in its entirety either in soft snow or nieve penitentes.

From the summit the panorama encompassing Ecuador's many other glaciated peaks is superb, and the views during the climb, the intricacy of the route, and the variety of moderate technical challenges encountered make this ascent of the world's highest equatorial summit an important achievement for both developing and experienced alpine climbers.

The descent to the Stübel Camp takes two hours. After returning to the camp, we pack and descend to Plaza Roja, or we will stay another night if necessary. We'll head back to Quito, or if we have an extra day because good weather facilitates an ascent on the first of our two summit days, we will return to the central valley and then travel east, part way down one of the major routes to the Amazon Basin. We will stop in the mountain valley town of Baños where the lush vegetation is home to an unusually large variety of orchids, butterflies, and hummingbirds a dramatic contrast to the flora and fauna of the alpine zones where we've been travelling and climbing. Based in a comfortable hotel near waterfalls and natural hot baths, we'll enjoy swimming, relaxing, and exploring the Rio Pastaza Canyon that flows with some drama (waterfalls!) to the Amazon. A bicycle descent of part of the canyon is an option. On our final afternoon, we'll return to Quito and look forward to a final celebratory dinner and a chance to review the highlights of our diverse and exciting trip together.


Ecuador - Chimborazo Climb

Dates and Details

Chimborazo is preferably climbed as a 4-day extension to the Cotopaxi Skills Expedition or the Antisana – Illiniza Expedition. This allows for proper acclimatization before climbing Ecuador's highest peak (20,702 ft / 6310 m). 

2023 Chimborazo Extension Dates

  • Team 9: November 14 - 17, 2023
  • Team 10: November 28 - December 1, 2023
  • Team 11: December 12 - 15, 2023
  • Team 12: December 27 - 30, 2023


2024 Chimborazo Extension Dates

  • Team 1: January 23 - 26, 2024
  • Team 2: February 20 - 23, 2024
  • Team 3: March 5 - 8, 2024
  • Team 4: May 14 - 17, 2024
  • Team 5: May 28 - 31, 2024
  • Team 6: June 18 - 21, 2024
  • Team 7: July 16 - 19, 2024



Pricing: $1130; Price is based on a minimum of 2 people per trip

Max Ratio: 2:1

Capacity: 10

Single Supplement: $160

Private Trip Pricing: 

Climbing in Ecuador can be an amazing adventure to share with friends or family! Please contact the AAI Office for pricing and additional information on private trips, or to arrange a customized trip that fits your unique schedule and availability: 360-671-1505 (Toll Free: 1-800-424-2249) or email: [email protected]. We would be happy to set something up for you!



  • Climbers registering for Chimborazo must also register for the preceding Cayambe-Cotopaxi Skills Expedition or the Antisana-Illiniza Expedition. Comparable courses may be considered on an individual basis.
  • Excellent physical condition - We will be happy to advise you on a conditioning program; more information is provided in the registration packet.


Program Cost Inclusions and Exclusions 

Inclusions: Lodging in hotels, haciendas, huts, and tents on a shared basis for the dates of your program (available on a private basis by special arrangement, subject to availability, and at added cost); meals while at huts and while climbing; group cooking equipment; admissions to museums and national parks; group climbing equipment; transportation during trip.

Exclusions: Airfare; airport transfers; personal equipment; meals in cities, hotels, haciendas, and lodges; gratuities to guides; government and airport taxes; inoculations; personal insurance; excess baggage.


Flight Information

Flight arrangements should be made so that you arrive in Quito on the first scheduled start day of the trip, and you depart the day after the last scheduled day of the trip. Please email or call our Travel Coordinator, Lisa Greif, if you would like assistance with travel arrangements (509-972-4028).


Other Programs & Custom Itineraries in Ecuador

Our El Altar Expedition may be of interest to you if you are looking for a more technical challenge on a remote and rarely climbed Ecuadorian peak. We can also provide you with custom itineraries of any length for hiking, trekking, backpacking, scrambling, and climbing.

Ecuador - Chimborazo Climb

Trip Extensions

Galapagos Island, Amazon Basin, and Rain Forest add-ons

Traveling as far as you are to get to Ecuador, you may want to take advantage of your presence there to make a visit to the Galapagos Islands--an area that is on most people's short list of "sites I have to see in my lifetime." You can meet blue-footed boobies close up, swim with penguins and seals, and photograph amazing reptiles--all with no fear of humans. We can also arrange tours to the Amazon Basin and to lodges in the Ecuadorian cloud forest. Tours can range from a few days to a week or more. Call the AAI travel coordinator if you'd like to discuss some of your ideas or our recommendations.

Ecuador - Chimborazo Climb


"I had a great experience in Ecuador, and enjoyed every minute. The trip was very rewarding regarding beauty and the mountain experiences, but I expected this. What I did not expect were the friendships and relationships that developed between our lead guide, who was a fantastic human being, and the climbers. The guide was a very knowledgeable and experienced guide and I completely trusted him. He was completely committed to the climbers in situations in and out of the mountains, and we traveled effortlessly through his country. The combination of great company and great guiding made this trip a fantastic experience. Thanks AAI!"
Mike Brennan, Scranton, PA

"Not only was my guide technically solid on the mountains, he showed balanced decision making skills on each of the climbs. He did a great job tailoring the trip to our individual needs and abilities."
George Henderson, Harrisburg, PA

"Our expedition was truly an excellent experience. I believe this was due in large part to the character, skill, and personality of our two guides. They were exceptional, made us all feel like we could push ourselves safely, and helped me experience great personal success."
Josh Katzman, Arlington, MA

"AAI is by far the most experienced guide service in the Andes."
Adventure Travel Magazine

Ecuador - Chimborazo Climb

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