Is it possible to see every GPS activity I've done plotted on a world map instead of just one? If not, I think it would be a very interesting feature to add along with some badges for users who have done activities in different cities and countries.
Strava will do it if you have premium membership. Used to be some sites that would link to Strava and do it for free. Don't know if any are still active.
A Google on "garmin connect personal heat map". I found these. Probably others.
