The Circuit Trois-Rivieres is a street circuit used once a year or less, located in Trois-Rivieres, Quebec, Canada. The circuit has hosted several large events, including the American Le Mans Series, Grand-Am Rolex Series, Trans-Am series and Formula Atlantic races. The circuit is located at Terrain de l’Exposition (fairgrounds) and is unusual in that it passes through Porte Duplessis, the narrow concrete gateway of the grounds at turn 3. Originally hosting it’s first race in 1967, the organisers took inspiration from the Monaco Grand Prix. Over the years the layout and direction has changed several times, meaning today’s layout is very different from the original!