It was a barrier that had existed for decades: so long and so strong that some feared it would never be broken, that it represented a limit on human speed. But in London on Sunday morning, two men finally smashed through it, and ran the marathon in two hours.
But first their shoes – and the people who make them – had to surmount their own insurmountable barrier. Days before the marathon was run, Adidas officially unveiled their Adizero Adios Pro Evo 3, a shoe that weighs just 97 grams (and costs £450).
