Thomas Biagi won the first International Superstars Series race at Portimao, with Team BMW Italia scoring a 1-2-3 finish as Alberto Cerqui and Stefano Gabellini completed the podium.
Youngster Cerqui led away from pole position, with reigning series champion Biagi taking second place from the Maserati Quattroporte of Swiss Team driver Andrea Bertolini at the start. Meanwhile Johnny Herbert took fourth place away from Gabellini in his Romeo Ferraris Mercedes, though the BMW driver would not take long to retake the position.
Up front Biagi took the lead from Cerqui in the middle of the race, and went onto win with a 2.5 second gap over Cerqui. Bertolini was set for third until a tyre failure on the final lap which handed the final podium position to Gabellini.
Bertolini was still able to finish fourth, with Herbert having suffered a puncture himself in the closing stages that forced him to pit. Luigi Ferrara finished fifth in his Caal Racing Mercedes, ahead of what had been an intense battle for seventh, which became sixth when Herbert pitted.
Ferrara's teammate Riccardo Romagnoli made a good start to move up into seventh at the start, but came under pressure from those behind. Michela Cerruti first tried to find a way through in her Romeo Ferraris Mercedes, but was passed in the meantime by Motorzone Chevrolet driver Fabrizio Armetta. Armetta then got past Romagnoli and went onto finish sixth.
Contact between Cerruti and the Ferlito Motors Jaguar of Francesco Sini saw Sini spin off. Max Pigoli moved up into seventh ahead of Cerruti, while Romagnoli dropped back into the clutches of the second Maserati driver Andrea Chiesa. Chiesa overcame a spin caused by contact with Alex De Giacomi to finish ninth ahead of Romagnoli.
Race results after 15 laps:
| Pos | Driver | Team | Car | Time/Gap |
| 1 | Thomas Biagi | Team BMW Italia | BMW M3 E92 | 28’15.249 |
| 2 | Alberto Cerqui | Team BMW Italia | BMW M3 E92 | 2.529 |
| 3 | Stefano Gabellini | Team BMW Italia | BMW M3 E92 | 8.844 |
| 4 | Andrea Bertolini | Swiss Team | Maserati Quattroporte | 23.643 |
| 5 | Luigi Ferrara | CAAL Racing | Mercedes AMG C63 | 29.253 |
| 6 | Fabrizio Armetta | Motorzone | Chevrolet Lumina CR-8 | 34.435 |
| 7 | Max Pigoli | Romeo Ferraris | Mercedes AMG C63 | 35.805 |
| 8 | Michela Cerruti | Romeo Ferraris | Mercedes AMG C63 | 39.596 |
| 9 | Andrea Chiesa | Swiss Team | Maserati Quattroporte | 47.632 |
| 10 | Riccardo Romagnoli | CAAL Racing | Mercedes AMG C63 | 51.449 |
| 11 | Isaac Tutumlu | Campos Racing | BMW M3 E92 | 1’03.870 |
| 12 | Sandro Bettini | Movisport | BMW M3 E90 | 1’04.009 |
| 13 | Andrea Dromedari | Romeo Ferraris | Mercedes AMG C63 | 1’04.045 |
| 14 | Mauro Cesari | MRT by Nocentini | Chrysler 300 C SRT-8 | 1’29.077 |
| 15 | Johnny Herbert | Romeo Ferraris | Mercedes AMG C63 | +1 Lap |
| 16 | Alessandro Tambussi | Movisport | BMW 550i E60 | +1 Lap |
| 17 | Alex De Giacomi | Movisport | BMW M3 E90 | +4 Laps |
| 18 | Francesca Linossi | Movisport | BMW M3 E92 | +5 Laps |
| 19 | Sergio Hernandez | Campos Racing | BMW M3 E92 | +5 Laps |
| Ret | Francesco Sini | Ferlito Motors | Jaguar XF | 4 laps |
| Ret | Luigi Cecchi | Ferlito Motors | Jaguar XF | 1 lap |
