Tsegaye Kebede of Ethiopia crosses the line to win the men's London Marathon in the Mall, in London, Sunday, April 21, 2013. A defiant, festive mood prevailed Sunday as the London Marathon began on a glorious spring day despite concerns raised by the bomb attacks on the Boston Marathon six days ago, as thousands of runners offered tributes to those killed and injured in Boston, with a moment of silence before the race, and many wore black ribbons as a sign of solidarity.(AP Photo/Alastair Grant)