I bought this not knowing about the approach that the author had taken, and therefore it came as something of a surprise as I worked through the opening chapters to realise that this was not a biography, but something closer to a dramatisation. As a result, you have no idea whether anything you are reading is actually true (other than clear historical fact, such as Bikila's victories) or the invention of the author.
Uncomfortably, nowhere in the paperback version is the author or the publisher honest enough to own up to this. You would have to be pretty slow to not realise that there is a lot of imagination involved, simply because the book is largely dialogue and frequently told from inside the heads of the main protagonists. No sources are cited for any of it. For all I know, the author could have picked up the historical fact and just conjured the rest into existence. If he did use other sources, he's being a little naughty not crediting them.
The book itself evokes the Ethiopia of the time interestingly enough - but again, I have no confidence in the accuracy.
In the end, you are left confused and not at all clear what you have read. I suppose if the author had written this as pure fiction it wouldn't have carried the appeal that a biography of a fascinating character in athletic history would.
"Dubious" is the best word I can come up with. I'm inclined to avoid the author's other works. Having finished the book, I'm also a little annoyed that I might have completely wasted my time.
Therefore I'm unclear as to how this got shortlisted for the sports book of the year award. Perhaps every sports book published goes on there?