Unlike a lot of neighborhoods the sidewalks in this area are often still paved in the original slate slabs. You can see “extra” pieces sometimes chained up outside like this…. Why pour concrete?
A spin around the park on a bike makes me feel good. One lap is about 6.13 miles. I've trained here for longer rides (including this London to Paris ride on a track bike that was 86 miles one day, rest on the second day, and 136 miles on the third day). I've sat there on a Sunday afternoon and have done as many as 10 laps (with rests in between). I switch in-between my carbon road bike and my steel track bike.