Grand Canyon Rim-to-Rim (R2R)

Overview: The Grand Canyon Rim-to-Rim (R2R) is a primary endurance route crossing the Grand Canyon from the North Rim to the South Rim, Arizona. Geological Context: The path descends through two billion years of history, from the Kaibab Limestone down to the Vishnu Schist at the Colorado River. Booking & Logistics Reality: Overnight stays require mandated backcountry permits or lottery-won lodging at Phantom Ranch. The trail is characterized by an 'inverted' profile and extreme thermal gradients. Stage Breakdown: The route typically utilizes the North Kaibab Trail for the descent and either the Bright Angel or South Kaibab Trail for the final ascent.

Considered a premier multi-day trekking route in Los Glaciares National Park, the Huemul Circuit provides a circumnavigation of Cerro Huemul near El Chaltén. The route crosses two significant passes—Paso del Viento and Paso Huemul—offering direct panoramas of the Southern Patagonian Ice Field. Terrain varies from forested valley floors and river crossings to exposed glacial moraines and high-altitude scree slopes. The circuit is defined by its remoteness and the requirement for technical river crossing skills using fixed steel cables.