eBooks

Originally created in 2005, thousands of athletes have used the Crucible Fitness Swim Clinic eBook, recently rebranded as Endurance Nation, to improve their swimming. Responding to the overwhelming demand and positive feedback from our original ebook, we've lifted the hood and reworked the product to make it even bigger, better, and more effective. 

"The Book" is the coaching, training, and racing philosophies of Endurance Nation. In a little over one year, more than 400 athletes have used the unconventional Endurance Nation approach to achieve incredible fitness gains and killer race results.

Few know how to train with power, Fewer still know how to race with it. This kit includes everything you need to race Ironman and Half Ironman distances with a powermeter. Get an instant head start on the competition!