Indianapolis 500 in the context of "IndyCar"

The 24 Hours of Le Mans (French: 24 Heures du Mans; French pronunciation: [vɛ̃t.katʁ‿œʁ dy mɑ̃]) is an endurance sports car race held annually near the city of Le Mans, France. It is widely considered to be one of the world's most prestigious races, and is one of the races – along with the Monaco Grand Prix and Indianapolis 500 – that form the Triple Crown of Motorsport, and is also one of the races alongside the 24 Hours of Daytona and 12 Hours of Sebring that make up the informal Triple Crown of endurance racing. Run since 1923, it is the oldest active endurance racing event in the world.

Unlike fixed-distance races whose winner is determined by minimum time, the 24 Hours of Le Mans is won by the car that covers the greatest distance in 24 hours. The cars on this track are able to achieve speeds of 366 km/h (227 mph), and reached 407 km/h (253 mph) on the Mulsanne Straight in 1988 – instigating the addition of more chicanes to the track to reduce speed reached. Racing teams must balance the demands of speed with the cars' ability to run for 24 hours without mechanical failure. The race is organized by the Automobile Club de l'Ouest (ACO). It is held on the Circuit de la Sarthe, composed of closed public roads and dedicated sections of a racing track.

The Indianapolis Motor Speedway is a motor racing circuit located in Speedway, Indiana, United States, an enclave suburb of Indianapolis, Indiana. It is the home of the Indianapolis 500 and the Brickyard 400, and formerly the home of the United States Grand Prix and the Indianapolis motorcycle Grand Prix. It is located six miles (9.7 km) west of Downtown Indianapolis.

Constructed in 1909, it is the second purpose-built, banked oval racing circuit after Brooklands and the first to be called a 'speedway'. It was the brainchild of entrepreneur Carl G. Fisher, who envisioned a proving ground for the budding automobile industry. It is the third-oldest permanent automobile race track in the world, behind Brooklands and the Milwaukee Mile. With a permanent seating capacity of 257,325, it is the highest-capacity sports venue in the world.

A roadster (also spider, spyder) is an open two-seat car with emphasis on sporting appearance or character. Initially an American term for a two-seat car with no weather protection, its usage has spread internationally and has evolved to include two-seat convertibles.

The roadster was also a style of racing car driven in United States Auto Club (USAC) Championship Racing, including the Indianapolis 500, in the 1950s and 1960s. This type of racing car was superseded by rear-mid-engine cars.

The IndyCar Series, officially known as the NTT IndyCar Series for sponsorship reasons, is the highest class of American open-wheel car racing in the United States, which has been conducted under the auspices of various sanctioning bodies since 1920. The series is self-sanctioned by its parent company, IndyCar, LLC, which began in 1996 as the Indy Racing League (IRL) and was created by then Indianapolis Motor Speedway owner Tony George as a competitor to Championship Auto Racing Teams (CART). In 2008, the IndyCar Series merged with CART's successor, the Champ Car World Series, unifying the history and statistics of both series (as well as those from their predecessors).

The series' premier event is the Indianapolis 500, which was first held in 1911. Historically, open-wheel racing was one of the most popular types of American motorsport. An acrimonious schism (often referred to by many as "The Split") in 1994 between the primary series, CART, and Tony George led to the formation of the Indy Racing League, which launched the rival IndyCar Series in 1996. From that point, the popularity of open wheel racing in the United States declined dramatically. The feud was settled in 2008 with an agreement to merge the two series under the IndyCar banner, but enormous damage had already been done to the sport. Post-merger, IndyCar continues to run with slight viewership gains per year.

The Monaco Grand Prix (French: Grand Prix de Monaco) is a Formula One motor racing event held annually on the Circuit de Monaco, in late May or early June. Run since 1929, it is widely considered to be one of the most important and prestigious automobile races in the world, and is one of the races—along with the Indianapolis 500 and the 24 Hours of Le Mans—that form the Triple Crown of Motorsport. It is the only Grand Prix that does not adhere to the FIA's mandated 305-kilometre (190-mile) minimum race distance for Formula One races.

The race is held on a narrow course laid out in the streets of Monaco, with many elevation changes and tight corners as well as the tunnel, making it one of the most demanding circuits in Formula One. In spite of the relatively low average speeds, the Monaco circuit is a dangerous place to race due to how narrow the track is, and the race often involves the intervention of the safety car.