The Paine Big Circuit, also known as the O Circuit, is a 7-day adventure designed for experienced and adventurous hikers seeking a truly immersive experience in Torres del Paine. Trek more than 100 km along one of the world’s classic trails, surrounded by towering granite mountains, glaciers, wild weather, turquoise lakes, and breathtaking views of the Southern Patagonian Ice Field.
This demanding trek requires good physical condition and a strong spirit of exploration, as it takes you through remote sections of the national park and across a dramatic mountain pass.
A true adventure for those looking to challenge themselves and experience Torres del Paine beyond its most accessible trails, immersed in the raw beauty and remoteness of Patagonia.
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Hike to the Base of the Towers
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Trek through the famous John Garner Pass
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Walk through the stunning French Valley
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Optional activities on Lake Grey
Day 0 - Welcome and briefing
Today, you’ll arrive at our office at Eberhard 230 in Puerto Natales for an informational meeting with your guides, the exact time will be confirmed by our Operations team. For larger groups or if you are arriving later in the day, this briefing can also take place directly at your accommodation for your comfort.
During this briefing, you’ll have the chance to meet your fellow travelers, break the ice, ask questions, and go over the itinerary in detail, including expected weather conditions, necessary gear, and all the recommendations to ensure a safe and unforgettable experience in Torres del Paine.
It’s the perfect moment to embrace the spirit of adventure, make final preparations, and start feeling the excitement of what awaits you the next day in one of the most breathtaking national parks in the world.
Your adventure this day includes:
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Briefing with your guide
Optional services
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Pre-tour accomodation
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Private transfer from Punta Arenas or Puerto Natales airport
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Public bus from Punta Arenas
Day 1 - Round-trip hike to the Base of the Towers
We’ll depart from Puerto Natales at 6:30 AM heading toward Torres del Paine National Park. Along the way, we’ll pass by estancias and open pampas. Get ready to be amazed by the stunning landscapes, flora, and fauna of Patagonia. Don’t forget your camera! Upon arrival at the refugio, you’ll be able to leave your luggage before starting the hike to the Base of the Towers.
We’ll begin the hike by entering the Ascencio Valley, gradually ascending until we reach the Windy Pass. This section is as breathtaking as it is exposed, with strong wind gusts, so it’s essential to follow your guide’s instructions to cross safely.
Just a few minutes ahead, we’ll arrive at Refugio Chileno, the last point on the trail with bathrooms, food for purchase, and internet access. Be sure to bring cash if you plan to buy anything.
From there, we’ll continue into a lenga forest, crossing small streams until we reach a scenic viewpoint that reveals the next, and most challenging, stretch of the day. The trail then climbs steeply over a massive terminal moraine, where we’ll be rewarded with the awe-inspiring view of the iconic Towers.
Your adventure includes:
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2-hour private transfer in total
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8 to 10-hour round-trip hike, 22 km / 13.6 mi
Accommodation and meals
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Night in a tent (double occupancy) or in a shared dorm room at Refugio Central
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Box lunch
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Dinner
Optional services
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Private porter service
Day 2 - Trekking from the Towers to Serón
If the weather allows, we’ll begin our morning with the orange glow lighting up the Towers at dawn. We’ll then set out on a hike through an ancient beech forest, where we might hear woodpeckers or spot fresh puma tracks along the way.
This is the easiest section of the circuit, following a well-marked trail with a gentle incline and distant views of Cerro Paine Chico. Our destination is Serón Camp, located in the northeastern sector of the Park, where our set-up tents will be waiting for us to rest and enjoy a comforting dinner together.
Your adventure includes:
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4 to 5-hour total hike, 13 km / 8 mi
Accommodations and meals
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Night in a tent at Serón Campsite (double occupancy)
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Breakfast
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Box Lunch
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Dinner
Day 3 - Through wildflowers and rugged peaks to Lake Dickson
Depending on the season, on the third day we’ll have the chance to admire the park’s floral beauty, including orchids, calceolarias, violets, and blooming oxalis. As we hike around Lake Paine, we’ll enjoy breathtaking mountain views such as Cerro Escudo and Cerro Cabeza del Indio, where the profile of an indigenous figure appears naturally carved into the rocks.
We’ll also have the opportunity to see the curved summit of Cerro Cubo and the stunning Lake Dickson, one of the border glaciers between Argentina and Chile.
Your adventure includes:
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6 to 7-hour total hike, 18,5 km / 11 mi
Accommodations and meals
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Night in a tent at Dickson Campsite (double occupancy)
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Breakfast
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Box lunch
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Dinner
Day 4 - Between mountains, rivers, and glaciers on the way to Los Perros
Today is a day to indulge the senses with stunning sights and rich textures. We’ll trek through some of the oldest beech forests in the park, following gently rolling trails alongside the Los Perros River.
Throughout the day, breathtaking views of mountains, waterfalls, and lush vegetation will accompany us. We’ll cross a suspension bridge over the river, leading to the base of our second terminal moraine, which feeds a crystalline lagoon below. From there, a final 30-minute hike brings us to today’s destination: Los Perros Campsite.
Tonight’s campsite is the only one on the circuit without hot showers or standard sanitary facilities such as flush toilets.
Your adventure includes:
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5-hour total hike, 13 km / 11 mi
Accommodation and meals
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Night in a tent at Los Perros Campsite (double occupancy)
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Breakfast
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Box lunch
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Dinner
Day 5 - To Grey throught the mighty Jhon Garner Pass
This is the most challenging day of the Paine Circuit, with demanding trails and variable weather conditions. However, your effort will be more than rewarded with some of the most breathtaking landscapes in Torres del Paine, experienced by only a few visitors to the park.
We will ascend to John Garner Pass, reaching 1,200 meters (3,937 feet) above sea level, where you’ll feel the strong Patagonian winds and be dazzled by the Grey Glacier and the still-unexplored peaks of the Southern Patagonian Ice Field.
The trail then leads us along the glacier, climbing and descending through forests of fallen trees and beneath the towering, almost sculpted granite walls of the Olguín Range. As we approach Grey Glacier, we may even witness an ice calving event.
Your adventure includes:
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10 to 11-hour total hike, 17 km / 13.6 mi
Accommodations and meals
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Night in a tent at Grey Campsite (double occupancy)
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Breakfast
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Box Lunch
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Dinner
Day 6 - Heading into Paine Grande
We’ll begin the day at the foot of the monumental Grey Glacier, where we’ll enjoy an unbeatable view and, with some luck, witness massive chunks of ice calving into the lake. On this penultimate day, you can choose from several activities: hike to the Grey Glacier lookout, join an ice trek with crampons, or embark on a kayaking adventure across Grey Lake, paddling around icebergs and in front of the glacier.
From there, we will take the trail toward Paine Grande, passing through forests and rivers. We’ll enjoy panoramic views of the vast Southern Patagonian Ice Field. As we descend, the trail will lead us to Laguna de los Patos, where we may spot southern steamer ducks.
Your adventure includes:
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3.5-hour total hike, 11 km / 6.8 mi
Accommodation and meals
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Night in a tent at Paine Grande Campsite (double occupancy)
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Breakfast
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Box lunch
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Dinner
Optional Activities
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Grey Glacier kayaking
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Ice Hike Grey Glacier
Day 7 - To the dramatic French Valley
On our last day, we’ll face a challenging hike into the heart of the Paine Massif. After breakfast, a winding trail awaits us, leading to the French River.
At the entrance of the French Valley, we’ll gradually ascend for about an hour, where you’ll catch your first glimpse of the hanging glacier at the top of the valley, until we reach the French Valley viewpoint: Le Plateau.
The return hike follows the same trail back to Paine Grande, where a catamaran will take us across Lake Pehoé. There, our transfer will be waiting to safely take us back to Puerto Natales.
Your adventure includes:
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7 to 8-hour total hike, 20 km / 12,4 mi
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35-minute total navigation
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2-hour total private transfer
Accommodation and meals
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Breakfast
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Box lunch
Optional services
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Accommodation in Puerto Natales for the night after the tour
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Private transfer to Punta Arenas or Puerto Natales airport
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Public bus to Punta Arenas
Dates and prices
We offer scheduled departures, allowing you to plan your adventure with complete clarity. Prices are calculated based on the number of confirmed passengers, reducing the cost per person as more travelers join. Each group is limited to a maximum of 8 people, ensuring a personalized and high-quality experience.
Season 26/27 — From October 1, 2026 to April 30, 2027
For tailor-made programs or inquiries about next season’s dates, please contact our sales team at [email protected].
Dietary Requirements & Safety Rules:
To ensure a sustainable operation in remote Patagonia, meal services follow a fixed menu designed around park logistics and shelter capacities, rather than an à la carte menu, dinners at Central, Cuernos, Francés and Dickson are served as single dishes. Grey and Paine Grande feature an assisted buffet, and Los Perros campsite provides trail rations.
Vegetarian: Options are fully guaranteed daily across all sectors.Gluten & Lactose Free: Buffets are not operational for vegan or strict diets. Non-certified gluten-free bread and lactose-free milk/cheese are available for mild intolerances only.Celiac & Severe Allergies: Facilities are not certified and cannot guarantee zero cross-contamination. For your safety, if you face life-threatening anaphylactic risks, we kindly and responsibly advise evaluating alternative packed food or alternative itineraries as remote conditions cannot safeguard these medical risks. Please contact our team beforehand so we can safely align this journey with your specific health needs.
Accommodations for Circuito “O” Circuit Campsite and Refuges
Exploring Torres del Paine National Park is an unforgettable experience, and the lodging options perfectly complement the adventure. We offer campsites and mountain refuges, providing comfort while you immerse yourself in the breathtaking nature of Patagonia.
What is included in the trip?
Our traveler’s experiences
Excellent guides, unforgettable memories
The hike was challenging but totally worth it. The scenery was outstanding and the reason we decided to visit Patagonia. The guides, Pablo and Fran, were simply amazing and made the whole experience so memorable. I’ve done several hiking trips, and this was the first one where I used a guide service. I’m so glad I did.
A transformative adventure
Excellent! It met our expectations and much more. Our guides, Mauricio and Fernando, were very friendly, always putting safety first, and were very knowledgeable about the area. They answered all our questions enthusiastically, were great cooks, and kept us informed about what was coming next. Excellent guides, and I would highly recommend them.
A balance of learning and adventure
I can’t say enough about Mauricio, Gerardo (our guides), and the organization of Chile Nativo. We had a wonderful trip, everything felt extremely well organized, and I always felt safe and well taken care of. Our guides made the trip feel special and managed our group, which had a wide range of personalities, very well. They also did a great job explaining the park and our hike, helping us learn about Patagonia.
Exceptional guides, unforgettable experiences
Amazing! We went on our honeymoon and couldn’t have asked for more. The guides were excellent, especially Fernando. His knowledge, friendly nature, and patience were outstanding.
Every minute, a unique experience.
Excellent hike, I enjoyed every minute. There were many companies doing the same trip, but I’m so glad I chose this one! Everything was smooth when making the reservation, the itinerary details were clear, and I felt well taken care of.
What you should know
Responsible Travel
At Chile Nativo, we support the conservation and sustainable development of Patagonia. That is why for every tour booked to Torres del Paine, we donate $15 to the Torres del Paine Legacy Fund. Additionally, we collaborate with local communities, support small businesses, and sponsor two rural schools.
Responsible Travel
At Chile Nativo, we support the conservation and sustainable development of Patagonia. That is why for every tour booked to Torres del Paine, we donate $15 to the Torres del Paine Legacy Fund. Additionally, we collaborate with local communities, support small businesses, and sponsor two rural schools.