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The Indianapolis 500 is an automobile race held annually at Indianapolis Motor Speedway in Speedway, Indiana, an enclave suburb of Indianapolis, Indiana. The event is held over Memorial Day weekend, which is typically the last weekend in May. It is contested as part of the Verizon IndyCar Series, the top level of American Championship Car racing, an open-wheel formula colloquially known as "Indy Car Racing". The event, billed as ''The Greatest Spectacle in Racing'', is considered part of the Triple Crown of Motorsport, which comprises three of the most prestigious motorsports events in the world. The official attendance is not disclosed by Speedway management, but the permanent seating capacity is upwards of 250,000, and infield patrons raise the race-day attendance to approximately 300,000.〔(List of stadiums with 100,000 plus capacity )〕 The inaugural running was won by Ray Harroun in 1911. The race celebrated its 100th anniversary in 2011, and the 99th running was held in 2015. Juan Pablo Montoya is the defending champion. The most successful drivers are A. J. Foyt, Al Unser, and Rick Mears, each of whom have won the race four times. Rick Mears holds the record for most career pole positions with six. The most successful car owner is Roger Penske, owner of Team Penske, which has 16 total wins and 17 poles. For a list of races and winners, see List of Indianapolis 500 winners. ==Race specifics== The Indianapolis 500 is held annually at the Indianapolis Motor Speedway, a 2.5 mile oval circuit. Drivers race 200 laps, counterclockwise around the circuit, for a distance of 500 miles. Since its inception in 1911, the race has always been scheduled on or around Memorial Day. Since 1974, the race has been scheduled for the Sunday of Memorial Day weekend. Practice and time trials are held in the two weeks leading up to the race. Traditionally, the field consists of 33 starters, aligned in a starting grid of eleven rows of three cars apiece. The event is contested by "Indy cars", a formula of professional-level, single-seat, open cockpit, open-wheel, purpose-built race cars. As of 2015, all entrants utilize 2.2 L V6, twin-turbocharged engines, tuned to produce a range of . Chevrolet and Honda are the current engine manufacturers involved in the sport. Firestone, which has a deep history in the sport, dating back to the first 500, is the exclusive tire provider. The race is the most prestigious event of the IndyCar calendar, and one of the oldest and most important automobile races. It has been avouched to be the largest single-day sporting event in the entire world. Likewise, the Indianapolis Motor Speedway itself is regarded as the world's largest sporting facility in terms of capacity. The total purse exceeded $13 million in 2011, with over $2.5 million awarded to the winner, making it one of the richest cash prize funds in sports. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Indianapolis 500」の詳細全文を読む スポンサード リンク
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