Is 'sub-two-hour' Nike marathon bid just a clever marketing stunt?

On an F1 racetrack, three world-class athletes will try to break the record for a 26.2-mile race Roll up, roll up - come and see the last of the "world marathon majors" before a man breaks the two-hour barrier. This could be the pitch for Sunday's London marathon when some 38,000 runners take to the capital's streets in an event watched by millions. Many will be hoping for a race as memorable as last year when Kenyan Eliud Kipchoge ran a course record, coming home in 2:03:05. Related: London Mar...