Parnell, a 55-year-old mining engineer dedicated a year of his life to run 250 marathons with the aim of raising $250,000 for the charity Right To Play, an international humanitarian organization that reaches out to disadvantaged children around the world. Along with information on technique, gear, nutrition and the challenges facing new and seasoned athletes as they prepare for either regular or ultra-marathons, Martin gives honest and often humorous insight into why an ordinary person would push themselves to the limit, both mentally and physically, in pursuit of their goal to make the world a better place.