Ultra Trail Torres del Paine (UTTP) is a trail running event that utilises the best trails with the beautiful Torres del Paine National Park in Chilean Patagonia's extreme south. 

UTTP has 3 very different events, taking place over the course of a weekend:
50km ultramarathon (Saturday)
25km long half marathon (Sunday)
Vertical KM (Sunday)

For more information, visit Swoop Patagonia.