This charts shows the weekly training mileage of strava athletes who ran the 2016 London Marathon. The data is rendered using a combination of d3 and d3fc components.
https://unpkg.com/d3@4.6.0
https://unpkg.com/d3fc@12.1.0
https://cdnjs.cloudflare.com/ajax/libs/d3-legend/2.18.0/d3-legend.js