'Why wouldn't you, if you can run faster?': the unstoppable rise of the carbon-fibre super shoe

Hi-tech running shoes have sent world records tumbling and sparked debate. Do they herald the end of the level playing field, or are they the saviour of long-distance racing? The 31-year-old British athlete Phil Sesemann arrived at the Seville marathon in February with a clear aim: to run the 26.2-mile course in less then two hours, eight minutes and 10 seconds. If he recorded that time or went faster, he'd meet the British qualifying standard to compete for Team GB at this summer's Olympics in ...