The Circuit Trois-Rivières is a street circuit located in Trois-Rivières, Quebec, Canada. The circuit has hosted American Le Mans Series, Grand-Am Rolex Series, Trans-Am series and Formula Atlantic races in the past. 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.