It is a large automobile racing complex in Lost Heaven that is featured in Mafia: The City of Lost Heaven. It is located southeast of the Works Quarter and accessible through a road that leads from the southeast end of the neighborhood to a tunnel blocked off by a bar. It hosts the Lost Heaven Grand Prix.
The Racing Circuit can only be accessed in the mission Fairplay, in which Tommy Angelo must first go there to steal a racing car and drive it to Lucas Bertone in order to have it de-tuned before returning with it. Then, the next day, he must return to race against the other drivers because the regular driver's arm was broken.