As of January 2026, hikers can once again explore the O Circuit, or Paine Massif, on a self-guided basis—one of Patagonia’s most complete and challenging routes—now operating under a renewed safety protocol grounded in scientific criteria and early warning systems.

In Torres del Paine National Park, one of the world’s most iconic trekking destinations, the possibility of undertaking self-guided trekking on the Macizo Paine Circuit, also known as the O Circuit, has officially resumed—an initiative long awaited by both domestic and international hikers.

The decision by the National Forestry Corporation (CONAF) brings to an end a transitional period during which it was mandatory to complete this route with a certified tour guide, a requirement that remained in place while a comprehensive update of the Mountain Trail Operation Protocol was being developed. The objective: to strengthen high-mountain safety without compromising the experience of those seeking a direct connection with Patagonian nature.

A circuit that encircles the heart of the Paine massif

The O Circuit, which includes the renowned W Circuit, is considered the most complete experience within the park. The route begins at the Visitor Center of the Cerro Paine Reserve, from where the trail heads north toward the Serón sector, offering a first glimpse of the open landscapes of the Patagonian steppe.

As it skirts the Paine massif along its northern face, the itinerary enters areas with lower tourist traffic and greater isolation, reaching Lake Dickson and the imposing Dickson Glacier, one of the park’s most remote settings. Further on, the trail leads to John Gardner Pass, the highest point of the circuit at 1,241 meters above sea level, from where hikers enjoy a privileged view of the Southern Patagonian Ice Field.

This section, one of the most demanding, stands out for its impressive suspension bridges, which span deep glacial channels and offer unique panoramas of mountains and ice tongues. After the descent, the trail finally connects with the W Circuit at the Grey Lookout, integrating both routes into a continuous experience.

Traveling the Macizo Paine Circuit allows access to places that are not visible from other park trails. Among them are the Los Perros Glacier, Lake Los Perros, and sweeping views of the southern Patagonian ice field, one of the most extensive glacial systems on the planet.

In this environment, visitors can directly observe some of the mountains, ice fields, and glacial tongues that shape this extreme territory, consolidating the O Circuit as a privileged route for those seeking a long-distance trekking experience that is immersive and less impacted.

Science, prevention, and coordination

The return of self-guided trekking does not imply a relaxation of regulations; quite the opposite. CONAF has implemented a new mountain protocol that incorporates advanced technical standards for risk management on high-demand trails.

One of the main advances is the implementation of an Early Warning System, developed in coordination with the National Service for Disaster Prevention and Response (SENAPRED) and the Chilean Meteorological Directorate (DMC). This system defines scientific thresholds for critical climatic variables such as wind, precipitation, and temperature, enabling objective decisions regarding preventive trail closures.

The protocol also formalizes strengthened institutional coordination, integrating specialized meteorological information directly into the park’s daily operations. This articulation makes it possible to anticipate episodes of adverse weather, reduce risks for visitors and staff, and minimize the impact on tourism activity through clear, timely communication based on scientific evidence.

In this way, the assessment of conditions no longer relies solely on isolated observations, but on a dynamic system that adjusts to the real behavior of the Patagonian climate, known for its variability and extremes.

For CONAF, the return of self-guided trekking represents a balance between hiker autonomy and shared responsibility in the protection of the natural environment. The institution emphasized that high-mountain hiking entails inherent risks, and therefore each visitor must strictly comply with registration requirements, reservations, appropriate equipment, and current regulations.

Access to the Macizo Paine Circuit, as well as to the rest of the trails of Torres del Paine National Park, will always be contingent upon compliance with the new protocol, the prevailing weather conditions, and the ongoing assessment by park rangers in the field.

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