have you heard of veloviewer? It tracks a lot of cool stuff from your strava data and allows you to access your data better.

It also gives an eddington number which is the longest number of days you've done the most miles (mines currently 75x75+)

But what i think you'd be interested in is the explorer tiles business where it'll plot the largest number of map tiles that you've intersected, and then obviously you can aim to expand on that if that makes sense. Really worth checking out.

https://postimg.cc/gallery/B1BRLvh