Circuit Breaker is the ninth Circuit race in San Francisco. It takes place in the northeast corner of the city, and the layout is extremely complicated. It is probably the hardest race in the game to stay on, especially in Professional, with the fog. The opponents include two Panoz Roadsters and two Audi TTs (Amateur) or four Panoz Roadsters (Professional). The time of day is night, and the weather is cloudy (Amateur) or foggy (Professional).