I like reading this stuff and it offers a realistic and sensible idea of what might be possible and how soon. Lots of decent club runners I've met will never run an 18 minute 5k. For the few who run 15:xx and 16:xx, there's far more that do well to hit 19:xx (but I mostly chat with others way up in the vet categories like myself, so...).
Thanks.
Recently at my job there's a guy that join which was very very addicted to running.
He's around 50 and the first time we went running together he just told us that 3-4 years ago he never ran at all and because of his daughter he started and decided to dedicate himself to running.
I don't remember the details, but in one or two years max he was able to run 10km in 33mn, his training was very harsh and he was a bit of a nutcase though, having trouble sleeping, being in a terrible mood for himself and his family and always wanting to beat the shit out of every runner in front of him in a race, he also told us how he went in Africa training with an ex marathon world champion.
He was socially impossible to deal with, he always ate what he prepared at home to only have what is needed from a nutritionnal point of view, and his wife was on the verge of asking for a divorce.
Fortunately he broke something in his hip, forcing him to stop running altogether for a few months during which he realized how he went too far in that.
Running with him occasionally he still have some lingering feelings of that time clearly, like when we're running if somehow someone goes past us we just have to speed up to not allow that other runner to do that, bonus point if it's someone young 'look at that youngster he must be bluffing and trying to show off let's show what we've got", and double bonus point if it's a girl "time to show her how big your balls are! We can't let a damn girl be faster than us"
He's also the only one in our group doing some special running session using words we've never heard before ahah.
It's funny but in retrospect I can see how hard it must've been for his family, anyone close to him and even himself back then.