A professional psychologist spent his entire life believing he had no ability or interest in sport. Then, in his forties, he became a champion ultradistance athlete before breaking the world record for the fastest bicycle crossing of Europe.

Endless Perfect Circles is not just a tale of sleep deprivation and eating terrible food in supermarket car parks, it is also a celebration of how tough sporting challenges offer ordinary people a path to self-improvement. Weaving his own experiences together with psychological insights, Ian Walker demonstrates the rewards we can all find from setting ourselves difficult personal goals and working out how we will rise to meet these.