Mo Farah, who won gold medals in the 5,000m and 10,000m races at the 2012 London Olympics, is ready to run half the London marathon on Sunday (April 18).
Farah is running half marathons this year while he prepares to run the full distance in the London marathon next year.
Asked about security concerns running in London, after the Boston explosions earlier in the week, Farah said he regarded London as his home, felt comfortable there and would just be thinking about racing.
"All my support goes to the people who got hurt in Boston and everywhere else but for me, this is home for me, so I've got to feel comfortable and for me this is the place to be," he told reporters. "I've just got to go out there and do what I normally do. I'm not thinking about anything really apart from racing and I know this is comfort for me and I am quite excited about the race."
He added that after the thirty seconds of silence before the race, to remember those killed and injured at the end of the Boston marathon, all the runners would be thinking about racing and blank out negative thoughts to concentrate on running.