Two-Hour Marathon | What Does It Take to Run a 2-Hour Marathon?
Kenya's Eliud Kipchoge, the marathon world record holder, wearing Nike Vaporfly shoes, prepares for the start of his attempt to run a marathon in under two hours in Vienna, Austria, October 12,
Athletics: Kipchoge's sub-two shoe would be legal under new rules, says Nike | Reuters.com
Athletes wear custom-engineered Nike trainers in attempt to break two-hour marathon barrier
Why Nike's #Breaking2 Marathon Attempt Wasn't About Selling a Sneaker | GQ