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Hello everyone, it's Michelle Vassage, and welcome to my podcast Rule Breakers.

But you sit down and be bright.

Celebrating women's voices.

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With a program that looks at the numbers behind the news,

and I'm Tim Harford.

Earlier this month, the comedy panel show QI turned its attention to the world of running.

Here's a quick question who runs faster men or women.

Now before you say the obvious answer, remember the obvious is often wrong when

Sandy Toxvig is asking the question. So Sandy, please tell us the answer.

It depends. In a shorter race, say of 5K for example, men tend to run 20% faster than women, but the longer it gets, the difference gets diminished. So in a marathon it's about 10% faster men.

A hundred kilometers, it's about 0.5 percent.

Once you get to a race that's over 195 miles,

and why would you, is the thing?

Women typically run faster times. Women typically run faster times than men for races over 195 miles

Just the kind of fascinating factual nugget we used to getting from QI. But is it true?

...