They thought it “opened up the lungs.”

If you want more insight into early 20th century sports, check out this account of the first modern Olympic marathon.

HISTORY

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HISTORY

I never thought about it before reading the article you posted, but WTF?

Holding the first modern games in Athens is obvious; the modern Olympics is a revival/recreation of the ancient games.

Going to Paris next makes sense; it’s one of the most prominent cities in the world (and was possibly even more so in 1900).

But St. Louis, Missouri?!

I’m reading en.wikipedia.org/wiki/1904_Summer_Olympics to figure out how the fuck it happened, and yep, the story is pretty stupid.

1904 Summer Olympics - Wikipedia

Pierre de Coubertin invented modern Olympic Games, that’s why Paris was 2nd on the list.
But even if he hadn’t, Paris would’ve been a reasonable choice. St. Louis, not so much.