CTS Training Director, Jason Koop, joins The Nation to talk about his recent Tweet: Check out Jason's book, "Training Essentials for Ultrarunning" Jason Koop is the Head Coach for CTS-Ultrarunning. He is the author of ‘Training Essentials for Ultrarunning’ which has become the benchmark book for ultramarathon training. During his coaching career, he has managed over 100 endurance coaches and several hundred atheltes of all types, abilities and sports. He is coach to many of today’s top ultramarathon athletes including Dylan Bowman, Kaci Lickteig, Timothy Olson, Stephanie Violett, Dakota Jones, Kelly Wolf and many others. He is also an accomplished ultrarunner in his own right having finishes in some of the most difficult races on the planet including the Badwater 135, Hardrock 100, Leadville Trail 100, Wasatch 100, Bear 100 and Western States 100