[OC] 2025 London Marathon



Posted by adamjonah

3 comments
  1. I wanted to visualise all of the participants of the London Marathon as if they all set off at the same time (including the elites)

    So I scraped each participant’s splits from the results page, interpolated their position along the route, and plotted a dot for each runner at regular intervals.

    I added some random noise and transparency so that the distribution of runners was a little easier to see.

    **Data source:**
    [https://results.tcslondonmarathon.com/2025](https://results.tcslondonmarathon.com/2025)

    **Tools:**
    – Python
    – Pandas / NumPy / gpxpy (for the data)
    – Matplotlib (for plotting)
    – contextily (for the map)

  2. More people done by 2:30hr than I expected

    That’s fast as hell

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