M.T. Elliott

The Rundown: Salomon Sonic RA

The Sonic RA is a snug-fitting trainer with a stiff and selectively-cushioned sole which creates a stable and responsive ride.

Behind the Shoe: Salomon Sense 7

Over four months, the Salomon design team made roughly 40 prototypes of the Sense 7 for Kilian Jornet to test. But tests didn't end there.