FOX Sports counts down the 25 most memorable moments in Indianapolis 500 history ahead of the 109th running on May 25 on FOX.

This year, like all years, the month of May at Indianapolis culminates in the 109th edition of the Indianapolis 500, the signature race for the NTT IndyCar Series and a motorsports institution well beyond the state of Indiana.

Helio Castroneves is seeking his record fifth win at the Indianapolis 500 on Sunday, while Josef Newgarden also chases history.

Helio Castroneves ran the fastest Indy 500 in 2021, completing the race in 2 hours, 37 minutes, 19 seconds. But raw speed isn't the key over 200 laps.

Die-hard Ohio State fan Graham Rahal will be looking to win his first Indianapolis 500 in his 19th start in the prestigious race.

It's not only Shwartzman's first attempt at the Indy 500 - it's his first race on an oval in his entire racing career. Shwartzman moved up through the European karting and Formula levels, eventually becoming the Formula 3 champion in 2019 and a test driver for Ferrari's Formula 1 team.

Rain delays Indianapolis 500, threatening Larson's aim for racing 1,100 miles; while Newgarden faces disqualification dramas as Team Penske fires top executives

Kyle Larson attempts to become the second driver to pull off "The Double" by completing the Indianapolis 500 and Coca-Cola 600 on Sunday