Virtual reality opens London Marathon to all

"You`re virtually there" is a common shout of encouragement to ailing runners in the London marathon but thanks to a new "interactive 3D experience" athletes the world over will be able to navigate the course from the comfort of their own treadmill.

London Marathon to run under heightened security

The London Marathon takes place Sunday amid a heightened police presence following the Boston Marathon bomb attacks -- and a moment of silence to remember those killed and wounded.