![New shoe makes running 4 percent easier, 2-hour marathon possible, study shows | CU Boulder Today | University of Colorado Boulder New shoe makes running 4 percent easier, 2-hour marathon possible, study shows | CU Boulder Today | University of Colorado Boulder](https://www.colorado.edu/today/sites/default/files/article-thumbnail/bostonmarathon.jpg)
New shoe makes running 4 percent easier, 2-hour marathon possible, study shows | CU Boulder Today | University of Colorado Boulder
![As the celebrated coach Alberto Salazar faces doping allegations, a shadow is cast over two of his elite runners competing in the Boston Marathon - The Boston Globe As the celebrated coach Alberto Salazar faces doping allegations, a shadow is cast over two of his elite runners competing in the Boston Marathon - The Boston Globe](https://arc-anglerfish-arc2-prod-bostonglobe.s3.amazonaws.com/public/VTB45DR5TQI6RDN2C5WP4SPELE.jpg)
As the celebrated coach Alberto Salazar faces doping allegations, a shadow is cast over two of his elite runners competing in the Boston Marathon - The Boston Globe
![Nike says Bekele wasn't wearing Breaking2 project shoes in London Marathon 2017. – Athletics World News Nike says Bekele wasn't wearing Breaking2 project shoes in London Marathon 2017. – Athletics World News](https://bergansportathletics.files.wordpress.com/2017/04/img_3040.jpg?w=640)