I would love to track my runs on a wider scale as well as on a city scale. It could be a percentage ( probably more a pro-mille) of the number of cities that i have run in (even if one street) in each country.
Visually it would be even nicer if you could see cities colored in when zooming out to a certain degree to also visualize better where you have run in the world. And maybe, just maybe, even when zooming out further, provinces where you have run could be colored in. Thus i would see new york streets at zoom A, new york bouroughs when zooming out to zoom B, new york city when zooming out to zoom C, new york state when zooming out to zoom C.