Weissensteiner won eleven medals at the FIL World Luge Championships, including two gold (Women's singles: 1993, Mixed team:
1989), 3 silvers (Women's singles: 1989, Mixed team: 1990, 1995) and 6 bronzes (Women's singles: 1995, 1996; Mixed team: 1991, 1993, 1996, 1997).