Encircling the entire Paine Massif, the heart of Torres del Paine National Park, the full Torres de Paine or "O" Circuit is world famous for its views and challenging sections, offering the ultimate outdoor endurance challenge for trekkers and adrenaline junkies. Stopping at all the popular "W" trek sights such as the bale of the Torres, French Valley, and Grey Glacier, the Paine Circuit ups the ante by taking trekkers through the John Gardner Pass, renowned for its views, to the Dickson Glacier and more. Think you're up to the test? Lets find out.