Five-time Ironman world champion is retiring after 20 years. The 36-year-old says she has achieved more than she ever dreamed of.
She will compete in races in Miami, London, Dubai and New York. The final race of her career is yet to be decided, but she says she is looking forward to it. She says: "It's time to go and do what I want to do with the rest of my life. I'm very proud of what I've achieved"