El Torreón, Mar del Plata, Argentina
Circuit Type: Temporary street circuit
Original Layout
Extension: 4,045 Km
Lap Record: 2:04.700
Year: 1950
Driver: Luigi Villoresi
Car: Ferrari 166 FL
Speed: 116,776 km/h
Pole Record: 2:03.700
Year: 1950
Driver: Alberto Ascari
Car: Ferrari 166 FL
Speed: 117,720 km/h
| Year | Official Name | Date | Winning Driver | Constructor | Laps | Time | Formula |
|---|---|---|---|---|---|---|---|
| 1950 | III Gran Premio Internacional General San Martín | January 15 |  Alberto Ascari |
Ferrari |
37 | 01:20:45.300 | F1EC |
| 1949 | II Gran Premio Internacional General San Martín | February 27 |  Juan Manuel Fangio |
Maserati |
35 | 01:16:31.300 | GP |
| 1948 | I Gran Premio Internacional General San Martín | January 25 | Giuseppe Farina |
Maserati |
37 | 01:24:02.700 | GP |