THE London Marathon will go ahead as planned, organisers said today after the Boston Marathon explosions prompted an urgent security review.
Organisers of this weekend's event in London said they have reviewed and will continue to review security arrangements with the Metropolitan Police and other authorities.
London Marathon chief executive Nick Bitel said: "The support we have been offered by our stakeholders and the wider running community has been outstanding. We have the full support of the Metropolitan Police, the Mayor's office and other authorities.
"We want to reassure our runners, spectators, volunteers and everyone connected with the event that we are doing everything to ensure their safety and that the Virgin London Marathon 2013 will be an outstanding success."
The London Marathon route passes some of the nation's most recognisable landmarks such as Big Ben and Parliament Square and attracts half a million spectators each year.
The flat and fast course starts in Blackheath, south-east London and finishes in front of Buckingham Palace.
It takes in other top tourist sights including Tower Bridge and Canary Wharf - one of the largest single business developments in the world.
Runners for the 26.2 mile London race are being urged to register as planned.
Other events linked to the marathon, such as the Expo meeting point which is being opened by Paralympic champion David Weir, are also set to go ahead.