The Autodromo Nazionale di Monza is a historic race track near the city of Monza, north of Milan, in Italy. Built in 1922, it was the world's third purpose-built motor racing circuit after Brooklands and Indianapolis. The circuit's biggest event is the Italian Grand Prix. With the exception of the 1980 running, the race has been hosted there since 1949.
Built in the Royal Villa of Monza park in a woodland setting, the site has three tracks – the 5.793-kilometre Grand Prix track, the 2.405-kilometre Junior track, and a 4.250-kilometre high speed oval track with steep bankings which was left unused for decades and had been decaying until it was restored in the 2010s. The major features of the main Grand Prix track include the Curva Grande, the Curva di Lesmo, the Variante Ascari and the Curva Parabolica. The high speed curve, Curva Grande, is located after the Variante del Rettifilo which is located at the end of the front straight or Rettifilo Tribune, and is usually taken flat out by Formula One cars.
In addition to Formula One, the circuit previously hosted the 1000 km Monza, an endurance sports car race held as part of the World Sportscar Championship and the Le Mans Series.