The Virgin London Marathon's Twitter page has posted a picture of celebrities before they attempt to run the 26.2 mile event in the capital.
The celebrities include former cricket captain Andrew Strauss, singer Katherine Jenkins and The Only Way Is Essex star Amy Childs.
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.