The Indianapolis 500 is held annually at the Indianapolis Motor Speedway, a oval circuit. The track is a rounded rectangle, with four distinct turns of identical dimensions, connected by four straightaways (two long straightaways and two "short chutes"). Traditionally, the field consists of 33 starters, aligned in a starting grid of eleven rows of three cars apiece. Drivers race 200 laps, counter-clockwise around the circuit, for a distance of . Since its inception in 1911, the race has always been scheduled on or around Memorial Day. Since 1974, the race has been specifically scheduled for the Sunday of Memorial Day weekend. The Sunday of Memorial Day weekend is widely considered one of the most important days on the motorsports calendar, as it is the day of the Indianapolis 500, the Coca-Cola 600, and (currently) the Monaco Grand Prix. Practice and time trials are held in the two weeks leading up to the race, while miscellaneous preliminary testing is held as early as April.