Jason Koop Leads a Training Revolution in Ultramarathon

Koop’s New Book Training Essentials for Ultrarunning Reveals His Unique Training Approach Boulder, CO, USA — April 21, 2016 — When elite ultrarunners have a need for speed, they turn to coach Jason Koop. Now the sport’s leading coach makes his highly effective ultramarathon training methods available to ultrarunners of all abilities in his new […]