Soon, though, he realises if there’s a secret at all, it’s much more complicated than that. All top Kenyan athletes, without exception, come from poor rural families. From a very young age, they’re walking and running everywhere, usually at high altitude. As one man recalls, the big test of aspiring runners when he was a boy was whether they could catch an antelope. Then there’s the fact that Kenyan athletes won virtually nothing until cash prizes were on offer — whereupon they surged to the front of the field. Finn glumly concedes he is never going to catch an antelope. But while he may be a bit of a plodder himself, I’ve seldom read a better account of the exhilaration of running — the sense of testing oneself to the limit, the constant blur of impressions, the “stirring of something primeval in the depths of our bellies”.