Trail running course through mixed terrain in Los Ríos, CL
Torrencial Chile by UTMB

Torrencial Chile by UTMB 64K

64K·Valdivia
ultramountainforesttechnicaltrailcoastalqualifier

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Distance64K
Date26 Jun 2026
Difficulty4/5

About This Race

The 64K at Torrencial Chile by UTMB takes runners deep into the Valdivian temperate rainforest, one of the most biodiverse ecosystems in South America. This distance requires sustained effort through terrain that alternates between dense forest canopy and exposed ridgelines, where the Coastal Range meets the Pacific weather systems that define this region. The course demands more than fitness—it requires adaptation to constantly shifting conditions and technical footing that punishes lapses in concentration. Runners face several hours navigating roots, mud, and variable surfaces while managing nutrition and pacing in an environment that can shift from humid stillness to driving rain. The Valdivian rainforest creates a unique racing atmosphere, with ancient alerce trees and endemic flora providing constant distraction from the physical demands. This is trail running as problem-solving, where weather literacy and technical skill matter as much as aerobic capacity. As part of the UTMB World Series, the race draws an international field to southern Chile's Los Ríos region, bringing global standards to a course that showcases distinctly Chilean conditions. The June timing places the event in late autumn, when daylight is shorter and temperatures cooler, adding another layer of consideration for runners planning their effort.

The route explores the Coastal Range outside Valdivia, moving through sections of protected rainforest and terrain shaped by centuries of rainfall. Expect sustained technical sections where root systems and mud require constant attention, interspersed with stretches that allow for more rhythmic running. The mixed terrain designation reflects the variety runners encounter—from narrow singletrack under dense canopy to wider trails that open views toward the coast.

Location

Practical Info

Weather

Late autumn in southern Chile brings cool temperatures, frequent rainfall, and shorter daylight hours. Conditions can shift rapidly from dry to wet, requiring preparation for multiple scenarios.

Accommodation

Valdivia offers a range of lodging options as a regional city, with hostels, hotels, and guesthouses accessible to runners. The city sits about 15 kilometers from the coast and provides good infrastructure for international visitors.

Best For

experienced trail runnersultra runnerscoastal terrain enthusiasts

Notable Features

This race provides access to the Valdivian temperate rainforest, a rare ecosystem found only in southern Chile and Argentina. The UTMB World Series designation brings international organization standards to a region relatively new to ultra-distance racing, creating an opportunity to experience Chilean trail culture within a familiar competitive framework. June's late autumn timing offers cooler temperatures but shorter daylight windows.

Other Distances at This Event

6K

150m gain

The shortest distance option, ISLA TEJA 6K offers a gentle introduction to trail running in Valdivia's unique environment. With just 150 meters of elevation gain, it's perfect for beginners or families wanting to experience the event atmosphere.

12K

The 12K course moves through Valdivian temperate rainforest terrain, characterized by dense vegetation, exposed roots, and trails that respond dramatically to rainfall. Runners should expect mixed surfaces ranging from forest floor singletrack to wider trail sections, with footing that requires constant attention. The route's specific elevation profile has not been published, though the coastal range terrain naturally includes rolling grades. Navigation follows UTMB World Series marking standards, with the course designed to showcase the region's distinctive ecosystem while remaining appropriate for runners with moderate technical trail experience.

21K

The course navigates mixed terrain typical of Chile's coastal temperate rainforest zone. Runners should expect variable footing as the route moves between trail types, with surfaces that may include forest paths, dirt roads, and potentially technical sections depending on recent weather. The region's high rainfall means conditions underfoot can change significantly, and what appears firm may become slick or muddy. Specific elevation details are not currently available, though the surrounding landscape features rolling topography characteristic of this transitional zone between the Andes foothills and the coast.

44K

108K

The route explores the Valdivian temperate rainforest near Valdivia in the Los Ríos region, an area known for its dense canopy, endemic species, and reputation as one of the wettest environments in Chile. Runners traverse mixed terrain across this ultra distance, with the rainforest's natural features—fallen logs, root systems, and perpetually damp ground—shaping the technical demands throughout.