Riverside International Raceway, simply known as Riverside, was an American racing facility, located near the city of Riverside, California, USA. Having been one of the first purpose-built tracks for road racing in the western US, Riverside was used to host the 1960 United States Grand Prix, replacing the airport circuit at Sebring. However, like Sebring, Riverside failed to draw popular support or financial success, despite the teams and drivers enjoying the fast, flowing layout.