| Event | Year | Start | End | Races | Teams |
|---|---|---|---|---|---|
| World Championship | 1968 | 25 Aug | 01 Sep | 6 | 75 |
| Svenskt Mästerskap | 1968 | 06 Aug | 10 Aug | 7 | 36 |
| Australian National Championships | 1968 | 01 Jan | 01 Jan | ||
| Championnat de France | 1968 | 01 Jan | 01 Jan | ||
| Irish Nationals | 1968 | 01 Jan | 01 Jan | ||
| North American Championship | 1968 | 01 Jan | 01 Jan |