Eliud Kipchoge. Making sub 2 hour marathon history

When 35-year-old Eliud Kipchoge, arguably the greatest male distance runner of all time, ran a sub two hour marathon earlier this year it was a moment in sporting history that many had considered impossible. Eliud Kipchoge's manager Valentijn Trouw talks to Kathryn Ryan about the preparations, controversies, and celebrations.