Hug was born in Walenstadt and used for his first ski mountaineering attempts on the Garmil years self-tinkered touring bindings, when he was eleven years old. He started armateur ski mountaineering sports in 1990 and competed first at the Arflina race. In 1999 and 2000 he won the Pizol Challenge, and has been member of the national team since 2000. He enjoys also mountain biking, climbing and mountain running. Together with Beat Good and Andreas Zimmermann he created the Pizol Altiski, which he organized in 2003. In autumn of 2005 he was trained as a landscape gardener in London. He currently works at Golf Club Bad Ragaz. He lives in Sargans.