Everest Sky Race, Nepal
The Everest Sky Race is probably one of the nicest trail running races in the world. It takes place in the Khumbu regnio in Nepal, around famous 8000 meters; Cho Oyu (8153 m), Lhoste (8501 m), Lhoste Shar (8383 m), Makalu (8463 m) and Mt. Everest (8850 m).