Found it full of typical American exaggeration and poorly researched.
According to McDougall( on page 96) Jim Peters was ten minutes under his world best time for the marathon at the ten mile point in the 1952 Olympic race
Peters marathon best at that time was 2-20-4.2 (assuming he ran fairly even pace he went through 10 miles in 53.30 so in Helsinki according to McDougall he went through 10 miles in around 43/44 minutes - utter bullsh*t!) In actual fact Peters went through 15km in 47.58 together with Jansson with Zatopek 2 seconds down (10 miles time would have been around 51.30)
If Mcdougall can't get simple facts right how much else of the book is believable?
As for the mexican race being one of the world's toughest races - the Ultra Tour of Mont Blanc beats it hands down
http://www.youtube.com/watch?v=b0gff...eature=related