Built a map of all 18,861 running tracks in the US

Heat trend

Collecting trend data

The percentage is based on available heat signal, not comment count or independent people.

Claude played a massive role in this, from helping build the algorithm that sourced the data to creating the site itself. It's also part of the sourcing pipeline; it runs an aerial analysis on suspected false positives (costs a lot 😣 but needed for some of the countries where OSM data is less up to date).

The raw data comes from OSM (OpenStreetMap), so none of this would have been possible without the many contributors there!