The London Marathon’s organisers have hailed the “greatest day” in the event’s 45-year history after huge crowds watched Sabastian Sawe become the first man to shatter the two-hour barrier in an official race, and a world record tally of more than 60,000 runners started the event. By 6.30pm on Sunday evening, organisers were also hopeful of breaking the record number of 59,226 finishers, set by the New York Marathon last year, although they said it could go right down to the deadline of 11:59pm. Hugh Brasher, the race director, said that an estimated 800,000 supporters had watched an epic men’s race, in which Sawe and the Ethiopian Yomif Kejelcha had both run under two hours. Meanwhile, the Ethiopian Tigst Assefa set a women’s-only world record, for races involving only female pace setters, although it was five minutes behind the outright women’s world record. “It is, without doubt, the greatest day in London Marathon history,” said Brasher.…