The Estoril Circuit is a motorsport race track located in Estoril, Portugal. Opened in 1972, it has hosted various racing events, including the Formula One Portuguese Grand Prix and the MotoGP. The circuit is known for its challenging layout, featuring a mix of fast straights and technical corners. With a length of 4.182 kilometers (2.601 miles), the Estoril Circuit has a capacity of around 100,000 spectators. It has undergone several renovations over the years to meet modern safety standards and accommodate different types of motorsport events, making it a popular venue for both professional and amateur racing.