Some are addicted to it, others hate it. Some train for their first marathon during a midlife crisis – others are forced into retirement by runner's knee at forty. Whether fast or slow, ultramarathon, sprint, or trail – running is incredibly versatile and yet always simple: putting one foot in front of the other. Alan Sillitoe, Isabel Bogdan, Lilli Tollkien, and others share their stories of lacing up running shoes, overcoming inner resistance, the ambivalent relationship with running watches, intervals, and the euphoria on the home stretch. New product