By night he was studying into the small hours, learning as much as he could about marathon running. "I worked really, really hard on it from April time onwards. Brailsford, Kipchoge and Ratcliffe pictured together at a party celebrating the Kenyan's remarkable achievementBack in Kenya, Kipchoge was beginning a journal of his own - a training log for the biggest challenge of his life. The real question for Brailsford, Ketchell and many others was: How could they help? The multi-layered assistance ranging from roundabouts to pacemakers meant Kipchoge's run could not be counted as a world record.

Source: BBC November 19, 2019 00:00 UTC