When you think of a doubleheader in sports, you probably imagine a baseball team playing two games in one day. But for a select group of racing drivers, "The Double" means something far more grueling: 1,100 miles of racing across two completely different cars, at two iconic tracks separated by over 500 miles.

This Memorial Day, British driver Katherine Legge is poised to join an exclusive club when she attempts the rare feat of competing in both the Indianapolis 500 and the NASCAR Coca-Cola 600 on the same day. And she's already making history before she even straps in.

Here's what makes The Double so daunting: Your day kicks off around 12:45 PM ET at the Indianapolis Motor Speedway for "The Greatest Spectacle in Racing," and it doesn't wrap up until roughly 11 PM ET at Charlotte Motor Speedway, where NASCAR's longest race—the Coca-Cola 600—finally checksered flags. That's a full day of adrenaline, strategy, and sheer endurance.

In the history of motorsports, only five drivers have ever managed to run both races on the same day. And just one—three-time NASCAR Cup Series champion Tony Stewart—has successfully completed every single lap of both events. That's the kind of company Legge is chasing.

What makes Legge's attempt particularly fascinating is the twist on tradition. In recent years, it's usually been experienced NASCAR drivers venturing to Indy for the first time. But Legge is going the opposite direction: she's a veteran open-wheel racer stepping into the unknown world of stock cars at Charlotte. She'll pilot the No. 11 HMD Motorsports/AJ Foyt Racing Chevrolet at the Indy 500, then jump into the No. 78 Live Fast Motorsports Chevrolet for the Coke 600.

At 45 years old, Legge is the oldest driver to attempt The Double—beating the previous record by a full decade. She's also the first woman to ever try it, and the first non-American driver to take on the challenge. Talk about breaking barriers.

But can she pull it off? The biggest question mark isn't her skill—she's a seasoned pro with four previous Indy 500 starts under her belt. It's the NASCAR side that presents the true test. She did complete every lap at last year's Brickyard 400 in the same car, finishing a respectable 17th. But the Coke 600 is a different beast entirely, and there's the added pressure of potentially having to qualify her way into the show if the entry list is deep.

Of course, not every attempt ends in glory. Ask Kyle Larson, who famously missed the start of the 2024 Coke 600 after rain delays wreaked havoc on his schedule. The Double is as much about luck and logistics as it is about raw driving talent.

As Memorial Day weekend approaches, all eyes will be on Legge as she attempts to etch her name into motorsports history—and maybe even chase that elusive 1,100-mile perfect day that only Tony Stewart has ever achieved.