One of the most popular posts on Maps Mania in 2014 looked at the heat maps generated by joggers and cyclists using wearable technology. One of these maps was Mapbox's '1.5 Million Walks, Runs, and Bike Rides', created using data from Runkeeper users.
Mapbox has now updated that map to include 150,000 additional routes and higher levels of zoom. Mapbox were able to achieve this extra detail