Run, ride, sink or swim a year in the exhilarating and addictive world of women's triathlon

At the age of thirty-one, Lucy Fry was pretty certain she knew her limits. And here's how she felt about the component parts of triathlon: swimming - fairly terrifying, especially in open water. Cycling - brilliant when done on a stationery bike, indoors. Running - sometimes fantastic, sometimes hideous. But as increasing numbers of her female friends continued to sign up, Lucy couldn't help wondering: what was it about this exhausting pursuit th...