In 1984 Holzer became Italian champion in combined and 1986 in Super-G. He celebrated his greatest success at the Super G World Cup race in Leukerbad in 1988 , where he took third place. Two more times in his career he was able to place tenth in the top 10. Holzer took part in the 1988 Olympic Games in Calgary , where he finished eleventh in the Super-G.
Currently (2020) Holzer is active as a ski instructor and ski school president in the Cimaschool as well as a hiking guide in Olang .