A small R Markdown page available on the web with interactive maps of the Hastings Half Marathon, which I ran in March 2022 for Sands UK.
I captured the geolocation data via Apple Watch, extracted it with {gpx3d} and plotted it with {leaflet} and {plotly}.
You can read a short blog post about all this.
You might still be able to donate on my JustGiving page if you want to.