A swarm of people poured through the gates at Indianapolis Motor Speedway. Some were shirtless, some wore American flag overalls, others checkered flag mini-skirts.

INDYCAR schedule continues with the highly anticipated Indianapolis 500 on Sunday on FOX. Here are the highlights!

We're keeping track of everything happening at the Indianapolis Motor Speedway -- everything that is except the actual Indy 500.

He won the pole with Italian team Prema Racing, a dominant European organization that this season expanded to IndyCar. Shwartzman has never before raced on an oval and will start alongside two-time winner Takuma Sato and Pato O’Ward, who lost to Newgarden on the last lap year.

Remember, the general rule to keep in mind at the Indy 500 is this: If it can obstruct someone's view of the race, leave it at home.

It's been 12 months since Arrow McLaren driver Pato O'Ward tasted arguably the biggest defeat of his career. He was leading the competition until the final lap in the Indy 500 when he was passed by Team Penske's Josef Newgarden.

Indianapolis 500 winner will drink milk to celebrate on Sunday. Here's how the tradition started (and nearly ended) over the past century.