Britain's Catherine Duchess of Cambridge Britain's Prince William Duke of Cambridge and Britain's Prince Harry take part in a relay race during a...
{"Image ImageDescription": "Britain's Catherine, Duchess of Cambridge (R), Britain's Prince William, Duke of Cambridge (L) and Britain's Prince Harry (C) take part in a relay race, during a training event to promote the charity Heads Together, at the Queen Elizabeth Olympic Park in London, on February 5, 2017.\nThe Duke and Duchess of Cambridge and Prince Harry join a training day with the runners taking part in the 2017 Virgin Money London Marathon for Heads Together, the official Charity of the Year. / AFP PHOTO / POOL / Alastair Grant        (Photo credit should read ALASTAIR GRANT/AFP via Getty Images)"}