Two of best books about fell running in the Lake District are:

Lakeland Mountain Challenge

Long Days In Lakeland

Chapter 4 gives a very detailed and interesting account of the Bob Graham round.

Both are by Ronald Turnbull and published by Grey Stone Books

Quote Originally Posted by Grey Stone Books
Our fellrunning expert is Ronald Turnbull, a native of Scotland. His books give advice on diet, training and hillrunning injuries. They are invaluable to both novices and walkers who fancy injecting a little pace on the hills.