Emelie Forsberg can be as intense and competitive as any athlete in the world. A native of Sweden who lives in Chamonix, France,
High-altitude mountain running, also known as skyrunning, is one of the most challenging settings for a runner to compete in.
Photos from The Rut 50K, one of the hardest trail races in the U.S.
The Swedish runner burst onto the scene in the past year.