![Photo: Vsevolod33 / Shutterstock.com](http://cdn.triathlete-europe.competitor.com/files/2015/12/run-speed-1-300x238.jpg)
Photo: Vsevolod33 / Shutterstock.com
Add in these three key sessions per week to PR at your next 5K, 10K or half-marathon. Want to translate your hard-earned triathlon fitness
Photo: Vsevolod33 / Shutterstock.com
Add in these three key sessions per week to PR at your next 5K, 10K or half-marathon. Want to translate your hard-earned triathlon fitness