Winter is teacher of sports and German and a DAV mountain guide.

He took part in several ski mountaineering tours in his teens and competed in ski mountaineering events, amongst others in the 2001 Trofeo Mezzalama race, in the 2005 Pierra Menta race together with Günther Maier, in the Trophee du Muveran and others.

In this position, he led the establishment of the national ski mountaineering team.

He was also member of the DAV federal instruction team of mountain climbing as well as member of the special DAV federal instruction team of sports climbing.

Furthermore, he was voluntary speaker of school sports and general sports climbing of the DAV Oberland section and was responsible for the sportive workflow organization at the 2005 World Climbing Championship in Munich.