The roar of engines is getting closer, and the excitement is building at the Indianapolis Motor Speedway. Officials have announced that reserved seating for this year's Indianapolis 500—the world's largest single-day sporting event—is set for a second consecutive sellout, marking only the third time in the last decade that the grandstands will be completely full.

While official attendance numbers are never released for "The Greatest Spectacle in Racing," the numbers are staggering. Around the iconic 2.5-mile oval, there are an estimated 275,000 grandstand seats. When you add in the general admission crowds packing the infield, the total race-day audience swells to an estimated 350,000 fans. That's a sea of racing enthusiasts, all united by their love for speed and tradition.

The May 24 race will see four-time IndyCar champion Alex Palou looking to defend his title. He's already making a statement on the track, posting the fastest speed in Tuesday's first practice session. Fans watching from the stands or at home will be eager to see if he can repeat his 2024 victory.

Race organizers confirmed that the final reserved seats were expected to sell out by Tuesday evening. This marks the third time since 2016 that the grandstands have reached full capacity, demonstrating the enduring popularity of this legendary event. All badges and passes providing access to pit lane and Gasoline Alley are also completely sold out.

But don't lose hope if you haven't secured your spot yet. General admission tickets and a limited number of hospitality packages are still available. Plus, if you're set on a reserved seat, the Indianapolis Motor Speedway's official resale marketplace is open until 4 p.m. on May 20. Whether you're cheering from the grandstands or the infield, this is one race you won't want to miss—so gear up and get ready for an unforgettable day at the track.