Is that where you run on a street beginning with every letter of the alphabet in one session? I noticed some people have done that here recently (appears to be a parkrun replacement activity) but it's really only possible to do it in one area of Perth given that there's only one street starting with X in the whole city (this area just happens to be near me - I drew a map of it last Metro season). It also happens to have a Q, Z (x2), J and other minorities nearby (I believe it's possible to do it in 15km if you finish somewhere other from where you start, else it may extend out to around 20km).
No, I was trying to run every street in the municipality in alphabetical order. Only got towards the back end of the As before moving out of the area. (My current council area is not so good for this because the bulk of its area is in the not-particularly-inspiring running terrain of Preston and Reservoir).
Metro Melbourne has 10Xs (all Xaviers), two of which are sort of within range from my place. Just had a look at a potential route for the full set and think it can be done from my place in something like 20-25km.
We've got a Xavier Catholic School here but the street is Xanthium Circle.
I think I’ve done this particular block. An easy method is to work delivering junk mail!
I also know a couple of people who’ve started the A-Z challenge, including myself, but none who got past D!