Because it does highlight what women are capable of and it is certainly something to celebrate. Also, when it does happen it creates an interesting story which brings more attention to the sport (like this one did).

That women are winning these races, is a credit to this sport. Sports have no intrinsic value that isn't somehow tied to the good they do for humanity. We should judge them by their fruits. Even so, the vast majority of sports are constructed so that, on average, men have big advantages. It could be that it's easier to construct a sport that way. It could also be that constructing a sport that way better appeals to the prejudices of society. After all, there are some sports in which women compete at the highest level. For example, horse racing, open-water swimming, and as we see here "ultra" running. It's not necessary for women to win all or even most of the top prizes, but it's great that they win sometimes. Personally, although I enjoy watching gendered sports like ice hockey and American football I definitely see them as inferior to sports that exhibit more gender equality.

I don’t think anyone “constructed” running. People have been running for millennia.

Sure, running in general is basic to humans. The particular circumstances of particular races, like "so many laps over this particular course through the mountains" are very much a decision that some people made. Such decisions affect the results of those races.

It is illogical to believe that races were "constructed" by somehow varying the number of laps or terrain to make sure men win. It is far more likely that races were "constructed" to mimic the types of terrain people already ran.

Yeah well, you know, that's just, like, your opinion, man.

It's generally accepted history. But believe as you wish.

No, it´s better for everybody - the human race wins.

Let´s say you had a bunch of computers, and somebody had told you a certain type always ran slowly, so you never used them for anything fast, and even put them on slower connections, because of that. And then one day, you discovered if you connected them up to faster links, they ran faster.

You now have a larger number of faster computers. As with computers, so with society, it´s not a zero sum game.