If you are preparing for World's Toughest Mudder, Spartan Ultra-Beast, OCR World Championships Enduro or any other Ultra-OCR that is 5+ hours in length then you need this book. It includes three modular training plans (beginner, intermediate and advanced), obstacle specific completion/training tips, fueling strategies, daily diet information, rest/recovery techniques, gear lists, equipment recommendations, race day tactics, tips for performance, information about popular races and interviews with some of the best endurance Obstacle Course Racing athletes in the sport.

Interviews include:
-5x WTM World Champion, Undefeated in Ultra-OCR (OCRs 5+ hours in length) since 2013 and arguably the best OCR athlete ever Ryan Atkins
-5x American Ninja Warrior Competitor and the only female to stand on the individual podium of both World's Toughest Mudder (WTM) and OCR World Championship Amy "Magic" Pajcic
-2016's World's Toughest Mudder Champion, 5x WTM Podium Finisher and Marine Corps Veteran Trevor Cichosz
-2017's Spartan Ultra-World Championship (Iceland) winner and Spartan Pro Morgan McKay
-Multiple Time WTM Podium Finisher and Spartan Pro Allison Tai
-Several Ultra-OCR World Records, 2018's WTM Team World Champion (Team Atomik) and Conquer The Gauntlet Pro Evan "Ultra-OCR Man" Perperis
-2018 WTM Team World Champion (Team Atomik), 2017 WTM Team 2nd Place (Team Merrell) and SISU Ironman Wesley "Dr. Redtights" Kerr
-Ultra-runner that ran across the state of Michigan and top 15 finisher at WTM Jordan Smith
-Finisher of History Channel's "The Selection" and top ten WTM finisher Logan Nagle
-Death Race Finisher and 2xBFX Champion Christina "Honey Badger" Armstrong