Infineon Raceway Sports Car Course, currently named Sonoma Raceway is a real-world racing circuit which features in Gran Turismo 4 and Gran Turismo PSP. It is one of two circuits in the Infineon Raceway complex to feature in Gran Turismo (the other being Infineon Raceway Stock Car Course.
Players start at a road parallel to the pit lane and the Infineon Raceway Drag Strip, and when they reach Turn 4, they will continue via the Carousel (ignoring The Chute) and later a portion of the drag strip, before proceeding to Turn 7.

The Infineon Raceway Sports Car Course (in green) superimposed onto the full course.
In Gran Turismo[]
GT4[]
Beginner Events[]
- Spider & Roadster; 2 Laps - Race 3
Professional Events[]
- Race of NA Sports; 3 Laps - Race 1
- Boxer Spirit; 3 Laps - Race 2
- Supercar Festival; 6 Laps - Race 5
Extreme Events[]
- Real Circuit Tours; 9 Laps - Race 5
- Formula GT World Championship; 76 Laps - Race 9
European Events[]
- British GT Car Cup; 3 Laps - Race 4
- Italian Festival; 2 Laps - Race 3
American Events[]
- Old Muscle Car Championship; 2 Laps - Race 2
- United States Championship; 5 Laps - Race 2
Endurance Events[]
One Make Races[]
- BMW 1 Series Trophy; 2 Laps - Race 2
- Chevrolet Corvette Festival; 4 Laps - Race 4
- Opel Speedster Trophy; 3 Laps - Race 4
- Saleen S7 Club; 4 Laps - Race 5
- Volkswagen Lupo Cup; 2 Laps - Race 5
- Driving Mission 17;
- License Test B-15;
- License Test S-13;