The Circuit Trois-Rivières is a street circuit located in Trois-Rivières, Quebec, Canada and has been the home of the annual Grand Prix de Trois-Rivières since 1967. The circuit is located on the 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. In recent times the circuit has hosted only one major race weekend each year.