Airbnb on Twitter: "Witness sporting history. Win a #NightAt @Nike's Breaking2–– the ultimate running experience. Enter now: https://t.co/xeQpWWhyeN https://t.co/lPV0CJmACV" / Twitter
A detail of Eliud Kipchoge' shoes during the Nike Breaking2: Sub-Two... News Photo - Getty Images
Why Nike's Breaking2 could succeed - Canadian Running Magazine
Athletes wear custom-engineered Nike trainers in attempt to break two-hour marathon barrier