Wiberg won the giant slalom gold in the 1992 Winter Olympics in Albertville and the combination gold medal at the 1994 Winter Olympics in Lillehammer. She was at both these olympics the most successful Swedish athlete. She participated in the olympic games of Nagano 1998, where she won the downhill silver medal. Wiberg herself holds this achievement to be the best of her career. In her final olympics in Salt Lake City 2002, she failed to reach the top ten, finishing 14th in downhill and 12th in super-G. The olympic super-G was to be her final international race, as she a few weeks later announced her retirement following a surgery to her knees.
| Season | Discipline |
|---|---|
| 1994 | Combined |
| 1995 | Combined |
| 1997 | Overall |
| 1997 | Slalom |
| 1997 | Combined |
| Date | Location | Race |
|---|---|---|
| January 6 1991 | Bad Kleinkirchheim | Slalom |
| March 10 1991 | Lake Louise | Giant Slalom |
| March 23 1991 | Waterville Valley | Slalom |
| February 28 1992 | Narvik | Giant Slalom |
| december 6 1992 | Steamboat Springs | Slalom |
| december 12 1993 | Veysonnaz | Slalom |
| January 6 1994 | Morzine | Slalom |
| January 15 1994 | Cortina d'Ampezzo | Super-G |
| february 6 1994 | Sierra Nevada | Combined |
| March 12 1995 | Lenzerheide | Slalom |
| March 12 1995 | Lenzerheide | Combined |
| November 26 1995 | Vail | Slalom |
| december 22 1995 | Veysonnaz | Slalom |
| december 29 1995 | Semmering | Slalom |
| december 1 1996 | Lake Louise | Super-G |
| december 28 1996 | Semmering | Slalom |
| January 4 1997 | Maribor | Slalom |
| January 10 1997 | Bad Kleinkirchheim | Super-G |
| January 19 1997 | Zwiesel | Slalom |
| February 2 1997 | Laax | Combined |
| March 9 1997 | Mammoth Mountain | Slalom |
| January 3 1999 | Maribor | Slalom |
| december 18 1999 | St. Moritz | Downhill |