![In this Oct. 12, 2019 photo, marathon runner Eliud Kipchoge from Kenya, white vest, wearing Nike AlphaFly prototype running shoe, and his pacemaking team, wearing pink Nike Vaporfly shoes, run during the In this Oct. 12, 2019 photo, marathon runner Eliud Kipchoge from Kenya, white vest, wearing Nike AlphaFly prototype running shoe, and his pacemaking team, wearing pink Nike Vaporfly shoes, run during the](https://c8.alamy.com/comp/2MH22N9/in-this-oct-12-2019-photo-marathon-runner-eliud-kipchoge-from-kenya-white-vest-wearing-nike-alphafly-prototype-running-shoe-and-his-pacemaking-team-wearing-pink-nike-vaporfly-shoes-run-during-the-ineos-159-challenge-attempt-to-run-a-sub-two-hour-marathon-in-vienna-austria-nike-has-a-new-racing-shoe-the-air-zoom-alphafly-next-which-was-unveiled-at-a-flashy-fashion-show-in-new-york-on-wednesday-night-feb-5-2020-kipchoge-wore-a-prototype-of-the-shoe-when-he-ran-the-worlds-first-sub-2-hour-marathon-in-an-unofficial-race-in-october-ap-photoronald-zak-file-2MH22N9.jpg)
In this Oct. 12, 2019 photo, marathon runner Eliud Kipchoge from Kenya, white vest, wearing Nike AlphaFly prototype running shoe, and his pacemaking team, wearing pink Nike Vaporfly shoes, run during the
![Nike's two-hour marathon project reveals technological inequities in sport | Roger Pielke Jr | The Guardian Nike's two-hour marathon project reveals technological inequities in sport | Roger Pielke Jr | The Guardian](https://i.guim.co.uk/img/media/6b24cf0955ab3733b45ca6db05ae101fe6bfc45d/0_160_1600_960/500.jpg?quality=85&auto=format&fit=max&s=ee5942a025e783d6f7fa3399687375a2)
Nike's two-hour marathon project reveals technological inequities in sport | Roger Pielke Jr | The Guardian
![Nike's controversial Vaporfly shoes powered the world's 2 fastest marathoners to victory. When I tried them, it felt like running on rocking horses. | BusinessInsider India Nike's controversial Vaporfly shoes powered the world's 2 fastest marathoners to victory. When I tried them, it felt like running on rocking horses. | BusinessInsider India](https://www.businessinsider.in/thumb/msid-73358186,width-700,height-525/Ive-been-covering-the-science-of-Vaporflys-since-October-when-Eliud-Kipchoge-broke-the-2-hour-marathon-mark-wearing-a-Vaporfly-prototype-.jpg)
Nike's controversial Vaporfly shoes powered the world's 2 fastest marathoners to victory. When I tried them, it felt like running on rocking horses. | BusinessInsider India
![Nike's sub-two-hour marathon shoe doesn't look the way you think it should - Canadian Running Magazine Nike's sub-two-hour marathon shoe doesn't look the way you think it should - Canadian Running Magazine](https://runningmagazine.ca/wp-content/uploads/2017/03/Nike-Zoom-Vaporfly-4_8-1024x454.jpg)
Nike's sub-two-hour marathon shoe doesn't look the way you think it should - Canadian Running Magazine
![Sports Performance Bulletin - Base endurance training - A sub-2-hour marathon: what will it take and what can we learn? Sports Performance Bulletin - Base endurance training - A sub-2-hour marathon: what will it take and what can we learn?](https://d3rqy6w6tyyf68.cloudfront.net/AcuCustom/Sitename/DAM/085/10158-sub_2-hour.jpg)