![An Exclusive, Behind-the-Scenes Look at How Nike Is Trying to Break the 2-Hour Marathon Barrier | Runner's World An Exclusive, Behind-the-Scenes Look at How Nike Is Trying to Break the 2-Hour Marathon Barrier | Runner's World](https://hips.hearstapps.com/hmg-prod/images/1076/tadese-running-1506733667.jpg)
An Exclusive, Behind-the-Scenes Look at How Nike Is Trying to Break the 2-Hour Marathon Barrier | Runner's World
![ROME, ITALY, JUNE 23. 2020: Nike Running Shoes ALPHAFLY NEXT . Controversial Green, Black Athletics Marathon Shoe Editorial Stock Image - Image of black, eliud: 188352409 ROME, ITALY, JUNE 23. 2020: Nike Running Shoes ALPHAFLY NEXT . Controversial Green, Black Athletics Marathon Shoe Editorial Stock Image - Image of black, eliud: 188352409](https://thumbs.dreamstime.com/b/rome-italy-june-nike-running-shoes-alphafly-next-controversial-green-black-athletics-marathon-shoe-detail-air-zoomx-foam-zoom-188352409.jpg)
ROME, ITALY, JUNE 23. 2020: Nike Running Shoes ALPHAFLY NEXT . Controversial Green, Black Athletics Marathon Shoe Editorial Stock Image - Image of black, eliud: 188352409
![Did I do this right? I tried the first speed run but I'm not sure if I was supposed to stop running completely during the rest intervals, or simply slow down the pace, also not entirely sure if I ran hard enough : r/nikerunclub Did I do this right? I tried the first speed run but I'm not sure if I was supposed to stop running completely during the rest intervals, or simply slow down the pace, also not entirely sure if I ran hard enough : r/nikerunclub](https://preview.redd.it/f9rsqb62x3w71.jpg?auto=webp&s=3a37acffe121a58688b4903c791758bf617aa36a)