IoM Mountain - IoM Mountain Circuit
Races
| Events | Winner(s) |
|---|---|
| 1976 - Inter - Manx Grand Prix | |
| 1954 - Inter - TT Clubman's Trophy Races | 500cc : King | 350cc : Palmer |
| 1954 - FIM WC - International Tourist Trophy | 500cc : Amm | 350cc : Coleman | 250cc : Haas |
| 1954 - Inter - Manx Grand Prix | 500cc : Costain | 350cc : Ennett |
| 1976 - FIM WC - International Tourist Trophy | 500cc : Herron | 350cc : Mortimer | 250cc : Herron | SC 500cc : Steinhausen |
| 1976 - Inter - International Tourist Trophy | 1,000cc : Williams | Production : Simpson | SC 1,000cc : Hobson |
| 1987 - FIM TTF1 - International Tourist Trophy | TTF1 : Dunlop |