The Megavalanche of Alpe d’Huez is one of the most mythical and unmissable marathon runs in the world! Since 1995, thousands of you have taken the start of the Pic Blanc every year, in all weather conditions! Its start in Mass Start at 3330 meters above sea level on the glacier, and its arrival in Allemont, 2600m lower, make this DH Marathon the longest and craziest race in the world.