Double Olympic gold medallist Mo Farah completed half the London Marathon route, later tweeting the atmosphere was "amazing".
Amazing atmosphere...!!! The crowd was amazing, looking forward to next year
ITV News' Royal Correspondent reflects on running the London Marathon in the shadow of one of Africa's most endangered species.
Tens of thousands of runners turned out for the London Marathon in a show of solidarity to the Boston bomb attack victims.
London Marathon runners will wear black ribbons and observe a 30-second silence to honour the victims of the Boston Marathon bombings.