Douglas, Isle of Man, Great Britain
Circuit Type: Temporary street circuit
Glencrutchery Road/Governor’s Road section retained with return leg on Central Promenade
Extension: 6,240 Km

Lap Record: 3:08.000
Year: 1950
Driver: Reg Parnell
Car: Maserati 4CLT/48
Speed: 117,268 Km/h
Pole Record: 3:06.000
Year: 1949
Driver: Reg Parnell
Car: Maserati 4CLT/48
Speed: 120,852 Km/h
| Year | Official Name | Date | Winning Driver | Constructor | Laps | Time | Formula | 
|---|---|---|---|---|---|---|---|
| 1950 | 12th British Empire Trophy | June 15 |  Bob Gerard |  ERA | 36 | 01:59:36.800 | F1EC | 
| 1949 | 11th British Empire Trophy | May 26 |  Bob Gerard |  ERA | 36 | 01:57:54.000 | GP | 
| 1948 | 10th British Empire Trophy | May 25 |  Geoffrey Ansell |  ERA | 36 | 02:03:45.000 | GP | 
| 1947 | 9th British Empire Trophy | August 21 |  Bob Gerard |  ERA | 40 | 02:16:52.000 | GP | 
Track extended to a hairpin on Central Promenade
Extension: 6,5 Km

Lap Record: 3:06.000
Year: 1935
Driver: Brian Lewis
Car: Bugatti T59
Speed: 125,7 Km/h
Pole Record: 3:08.000
Year: 1935
Driver: Charles Martin
Car: Bugatti T59
Speed: 124,4 Km/h
| Year | Official Name | Date | Winning Driver | Constructor | Laps | Time | Formula | 
|---|---|---|---|---|---|---|---|
| 1935 | III Mannin Moar | May 31 |  Brian Lewis |  Bugatti | 50 | 02:40:11.000 | GP | 
Glencrutchery Road used to increase speeds
Extension: 5,889 Km

Lap Record: 2:50.000
Year: 1934
Driver: Brian Lewis
Car: Alfa Romeo Tipo B/P3
Speed: 124,7 Km/h
| Year | Official Name | Date | Winning Driver | Constructor | Laps | Time | Formula | 
|---|---|---|---|---|---|---|---|
| 1934 | II Mannin Moar | June 1 |  Brian Lewis |  Alfa Romeo | 50 | 02:25:41.000 | GP | 
Original Circuit
Extension: 7,4 Km

Lap Record: 4:10.000
Year: 1933
Driver: Brian Lewis
Car: Alfa Romeo 8C-2300 Monza
Speed: 106,6 Km/h
| Year | Official Name | Date | Winning Driver | Constructor | Laps | Time | Formula | 
|---|---|---|---|---|---|---|---|
| 1933 | I Mannin Moar | July 14 |  Brian Lewis |  Alfa Romeo | 50 | 03:34:52.000 | GP |