It is one of the few races where wheelchair racers and runners simultaneously compete on the same track. (KesslerFoundation.org)
Among those competing will be six - time Paralympic gold medallist David Weir who hopes to become the first wheelchair racer in history to break the three - minute barrier for the mile at the London event. (athleticsweekly.com)
More recently, McFadden established herself as one of the best wheelchair racers in the world at the 2011 IPC Athletics World Championships, winning five medals in five events, including four golds. (sbnation.com)