Sunday is going to ask Katherine Legge for everything she's got. Twice.

On May 24, the 45-year-old from Guildford, England, will attempt the hardest day in American motorsports: the Indianapolis 500 in the afternoon, then the Coca-Cola 600 at Charlotte Motor Speedway that night. Eleven hundred miles of racing between sunup and the checkered flag. Folks have a name for it — "the double" — and almost nobody tries it, because almost nobody can. Legge is about to become the first woman who ever has. She'll also be the oldest driver and the first foreign-born driver to give it a go.

Let me tell you something: this is not a publicity stunt with a helmet on. Legge has been racing at the top of the sport for two decades.

Start with the place she's headed first. Sunday will be her fifth Indianapolis 500 — she's run it four times before, in 2012, 2013, 2023, and 2024, with a best finish of 22nd back in '12. Before that she made her name in open-wheel: full-time in the Champ Car World Series in 2006 and 2007, and before THAT, a 2005 Atlantic Championship season where she won three races and became the first woman ever to win in the series. Then there's the sports-car résumé — 101 starts in IMSA between 2007 and 2024, four class wins, eighteen podiums. In 2024 she became the first woman inducted into the Long Beach Motorsports Walk of Fame. The woman has done a little of everything.

The stock-car chapter is the newest one. Legge made her NASCAR Cup Series debut at Phoenix in March of last year, and across eight Cup starts her best finish is a 17th — which came, of all places, at Indianapolis last July. So the road course at Indy already owes her a good day. Now she's going for the oval, and the 600 the same night.

And here's the thing — the Charlotte half might be the harder half. The Coca-Cola 600 is the longest race on the NASCAR calendar, 600 miles under the lights at our place, and it starts after she's already wrung 500 out of her body and a flight down from Indianapolis. Drivers who do nothing but Cup racing all year describe the 600 as a survival test. Legge is going to show up to it as the second act of her day.

Look. I'm not going to sit here and tell you she's the favorite in either race — she isn't, and she'd be the first to say so. The double has humbled bigger names than most fans remember. But that's not the point, and it never was. The point is that for the entire history of this brutal, beautiful, 1,100-mile tradition, the entry list has been all men. Sunday, it won't be. A 45-year-old Brit who has won on road courses, street courses, ovals, and sports-car circuits on two continents is going to strap into two different cars in two different states and chase the same sundown everybody else does.

This town knows a thing or two about hard days at the office. The 600 has been testing drivers down at Charlotte Motor Speedway since 1960.

On Sunday, Katherine Legge gets two of them. Set the DVR for the afternoon. Then come back for the night.