Indianapolis is in the Nine-County Region of Indiana, right at the center of the state. It is the state capital and largest city of Indiana, United States, and is in Marion County. The population within city limits is approximately 785,000 people, making it the 12th largest city in the US. The metropolitan area has about 2 million (23rd in the US). Indianapolis is also known as the "Racing Capital of the World" due to the proximity of the Indianapolis Motor Speedway, home of the Indy 500 and Allstate 400 at the Brickyard (formerly known as the "Brickyard 400").
The Indianapolis Motor Speedway (IMS), located in Speedway, Indiana, is the site of the Indianapolis 500-Mile Race (also known as the Indy 500), an open-wheel automobile race held each Memorial Day weekend on a 2.5 miles (4.0 km) oval track. The Indy 500 is the largest single-day sporting event in the world, hosting more than 257,000 permanent seats (not including the infield area). The track is often referred to as the Brickyard, as it was paved with 3.2 million bricks shortly after its construction in 1909. Today the track is paved in asphalt although a section of bricks remains at the start/finish line.
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