Security is not an issue, say London Marathon's elite men

• 'If you are thinking ... you can't concentrate'• Security will be tight, Patrick Makau adds Several elite men runners in Sunday's London Marathon have insisted they will try to put the Boston bombings out of their mind because dwelling on security issues would hamper performance. Three people died and 176 were injured on Monday as two bombs detonated within seconds of each other on the home straight of the Boston Marathon. Security measures have been ratcheted up ahead of London's version ...