| July 28, 1946 | 1o Quinta da Boa Vista | Boa Vista, Boa Vista, Roraima, Brazil | Formula Libre | Oldemar Ramos |
| December 15, 1946 | 2o Quinta da Boa Vista | Boa Vista, Boa Vista, Roraima, Brazil | Formula Libre | Francisco Sacco Landi |
| September 24, 1950 | Boa Vista, Boa Vista, Roraima, Brazil | Temporada Formula Libre | Francisco Sacco Landi | |
| April 22, 1951 | Boa Vista, Boa Vista, Roraima, Brazil | Temporada Formula Libre | Luigi Gino Bianco | |
| February 3, 1952 | Quinta da Boa Vista | Boa Vista, Boa Vista, Roraima, Brazil | Temporada Formula Libre | Juan Manuel Fangio |