Despite his considerable athleticism, "Karno" argues that the first half of any race is run with one's body, and the second half with the mind. Without delving into excessively touchy-feely territory, he explores "the possibilities of self" as he completes an ultra-marathon in 120-degree heat in Death Valley, and later the first-ever marathon at the South Pole. It's an odd combination: a California surfer dude contemplating how, as Socrates said,