Prince Harry: 'Missing London marathon never an option'
21 April 2013 Last updated at 14:21 BST
Prince Harry said missing the London Marathon was "never an option" even after last week's Boston bombings.
The Prince, who will present medals to the winners at the end of the 26 mile course, paid tribute to the victims of the atrocity.
He told the BBC: "The way that Boston has dealt with it has been absolutely remarkable.
"It's never going to get anyone down here...everyone comes together."