It stretches the limits of performance': the race to make the world's fastest running shoe | Running | The Guardian
adidas UK on Twitter: "adidas Runners, united by a passion to run #TakeCharge of the streets of London. #TakeChargeLDN https://t.co/6Ab0IbLoJu" / Twitter
Do Nike's Zoom Vaporfly 4% Marathon Shoes Actually Make You Run Faster? | WIRED