Analyzing the Changing Demographics of Marathon Finishers from 2010 to 2019

Participants are getting older, and we’re getting closer to gender parity

Brian Rock
Runner's Life

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Photo by Quino Al on Unsplash

Earlier this month, I published an analysis of the results of 50 years of demographic data from the New York City Marathon.

Specifically, I was interested to see how the field has changed over time in terms of gender and age.

If you rewind to 1970, marathoning was almost entirely a male sport. Today, it’s much more even, although there are still slightly more men than women. But beneath the surface, I was curious to see how the balance was shifting in terms of age — and whether the patterns for men and women were different.

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The advantage of using the New York City Marathon as a dataset is that it has 52 years of consistent data. But it is possible that its field is not truly representative of marathoning as a whole.

So today, I’m going to take a few of the conclusions from that previous analysis and see how they stack up against a different dataset that includes a representative sample of marathons in the United States from 2010 to 2019.

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Brian Rock
Runner's Life

I'm an avid runner, focusing on longer distances like the marathon. I also enjoy being out on the trails, walking my dog, and making beer. And I'm a data nerd.