Last weekend I read a great book that I heartily recommend (isn't the library great?)
It is about Michael Hutchinson's attempt to cycle further in one hour than anyone else ever has - although of course it isn't that simple.
He covers the history of "The Hour": the riders, technology, drugs, and how it has now become the anti-technology Athlete's Hour.
He talks about how he got in to cycling quite late in life, his training, racing, creating the bike for the attempt, the attempt itself and much more.
He has a writing style that is easy to read and addictive - I read the book over one weekend. There are lots of funny bits and his descriptions and opinions of the people involved are refreshingly honest - especially of himself.
I'd recommend this book if you're at all interested in cycling, record attempts or the mind of professional athletes - great stuff.