London Marathon 2013: wheelchair racer Josh Cassidy fuming after collision with women's Olympic champion Tiki Gelana Fearnley, the Australian wheelchair sprinter who fell under David Weir's masterful shadow during the London Paralympics in which the Briton won four gold medals, including the marathon, had his revenge at the head of the men's race when he burst through on The Mall in a thrilling last 100m to win his second London wheelchair marathon title. National hero Weir, who pushed out looking for a record seventh victory, was in the final pack, but finished in fifth place. Weir came home in one hour 31 minutes 31 seconds, two seconds adrift of Fearnley. Weir remains level on six London titles, with Baroness Tanni Grey-Thompson. It was always going to be tough to get back into the swing of things. I had four months off after the Paralympics," explained Weir. I always struggle the year after the Games, but I am happy, you can't win all the time. I'll bounce back. With race day around 10 degrees and no wind, the conditions were perfect for wheelchair racing. Birthday girl Tatyana McFadden took full advantage, capping what she called an "extraordinary week" to finish as the winner of the women's wheelchair race. Triple London paralympic Games gold medallist McFadden won in Boston on Monday, and said she had dedicated this race to those who were injured or died in the explosions there near the finish line. McFadden worked in tandem around the traditionally tough, slow London Course, with University of Illinois team-mate Amanda McGrory, who came in second. McFadden dedicated her efforts to the victims of the Boston bombings. Our thoughts are still with Boston. That was a great race for me to win and coming back to London was that little bit more special after the Paralympics. The crowd were fabulous, cheering us on all the way round. Obviously all of our thoughts are still with Boston. Today has been a great day for wheelchair racing. In the inaugural International Paralympic Committee "Athletics Marathon World Cup," double above-the-knee amputee Richard Whitehead finished in 3:15.53. Whitehead won the T42 200m at last summer's Paralympics in spectacular fashion in September in the Olympic Stadium coming from last in the field with 80 metres remaining to take gold. Whitehead, the only athlete in his class in the marathon today, is campaigning for the IPC to include his classification at the Paralympic Games.