Nägele started ski mountaineering in 1990 and competed first Mountain Attack race in 2000. Because Liechtenstein has no national ski mountaineering team, he mostly takes part in international events as single participant. 2001: Pierra Menta 7th, together with Jean Pellissier.
2001: 8th, Trofeo Mezzalama (together with Alexander Hug and Nicolao Leone Lanfranchi) 2002: 8th, World Championship single race 2003: 3rd, Mountain Attack marathon 2004: 3rd, Mountain Attack marathon 5th, World Championship vertical race 8th, World Championship single race 2005: 3rd, Mountain Attack marathon 4th, Trofeo Mezzalama (together with Alexander Lugger and Hansjörg Lunger) 2006: 6th (and 1st "seniors II" ranking), Patrouille des Glaciers, together with Alexander Lugger and Tony Sbalbi 9th, World Championship vertical race 1st, Trophée des Gastlosen, together with Marcel Marti 2007: 1st, Dolomiti Cup team (together with Mirco Mezzanotte) 8th, European Championship vertical race 2001: 10th, together with Alexander Hug 2002: 7th, together with Jean Pellissier.
