The title of this reflective and readable memoir refers to the author’s lifetime interests in sport and medicine — tracks which advanced not in parallel but with intersections. Few will be unaware that Roger Bannister was the first man to run a mile in under four minutes. The image of him breasting the tape scarcely needed reproducing on both the front and back cover of his book; even 60 years on, this moment is firmly imprinted on the country’s psyche.