Tonny de Jong
Tonny de Jong is a former Dutch speed skater, who was raised in Heerenveen and now lives in Calgary with Canadian speed skater Mark Knoll, whom she married in 2003.
She won three Dutch Allround Championships and numerous gold medals on the 3000 m and the 5000 m at the Dutch Single Distance Championships. In 1997 and 1999 she became European Allround Champion. De Jong was the first skater who mastered the clap skate.
At the 2002 Winter Olympics she had little success, but she did appear in a nude pictorial in the March issue of the Dutch Playboy. After the following World Allround Championships she ended her speedskating career.
Medals
An overview of medals won by de Jong at important championships she participated in, listing the years in which she won each:| Championships | Gold medal | Silver medal | Bronze medal |
| Winter Olympics | |||
| World Allround | 1997 1999 | ||
| World Sprint | |||
| World Single Distance | 1999 | 1999 1999 2000 | |
| World Cup | 1997 | 1997 | 1999 |
| European Allround | 1997 1999 | 1995 | |
| Dutch Allround | 1997 1998 2001 | 1995 1996 2000 | |
| Dutch Sprint | 1999 | ||
| Dutch Single Distance | 1996 1996 1997 1998 2001 2001 2001 | 1993 1993 1994 1994 1997 1998 1998 2000 2000 | 1997 2000 |
Personal records
To put these personal records in perspective, the last column lists the official world records on the dates that de Jong skated her personal records.| Distance | Time | Date | Venue | WR |
| 500 m | 39.36 | 27 January 2002 | Calgary | 37.22 |
| 1000 m | 1:16.23 | 21 February 1999 | Calgary | 1:14.96 |
| 1500 m | 1:56.02 | 20 February 2002 | Salt Lake City | 1:54.38 |
| 3000 m | 4:00.49 | 10 February 2002 | Salt Lake City | 3:59.26 |
| 5000 m | 7:01.17 | 23 February 2002 | Salt Lake City | 6:52.44 |
| Small combination | 163.497 | 10 January 1999 | Heerenveen | 163.020 |
De Jong has an Adelskalender score of 160.231. Her highest ranking on the Adelskalender was a 3rd place.