The personal messages the Breaking2 runners wrote on their shoes - Canadian Running Magazine
Episode 9: World Marathon Records are Falling, Ineos 1:59, Breaking 2, Nike Vaporfly 4%, Mechanical Doping, and more - The Art and Science of Running Podcast
The Epic Untold Story of Nike's Two Hour Marathon Attempt | WIRED
Nike designs "fastest shoe ever" to break the two-hour barrier for marathon running
Nike's Unreleased BREAKING2 Shoe Made For Eliud Kipchoge Appears On eBay - SneakerNews.com
Breaking2: high-tech shoe for Nike's bid to break the two-hour marathon | Running | The Guardian