| Event | Year | Start | End | Races | Teams |
|---|---|---|---|---|---|
| Pre-Worlds | 2001 | 19 Aug | 20 Aug | 1 | 34 |
| Pre-Worlds | 1999 | 02 Jul | 04 Jul | 4 | 88 |
| Pre-Worlds & North American Championship | 1998 | 12 Sep | 17 Sep | 6 | 90 |
| Pre-Worlds & Danish Championship | 1997 | 09 Aug | 12 Aug | 6 | 70 |
| Pre-Worlds | 1996 | 10 Apr | 10 Apr | 3 | 98 |
| Pre-Worlds | 1981 | 01 Jan | 01 Jan | 6 | 90 |