About Us
80/20 Endurance LLC is the world's largest dedicated provider of training plans and solutions for endurance athletes. The company's mission is to make elite best practices in endurance training available to everyone. More than just a training method, 80/20 Endurance is a global community of likeminded athletes who are brought together by a diverse array of offerings that include books, a podcast, virtual conferences, a charitable foundation, education, and more. The company's training methods are built on the optimal intensity balance and other empirical principles outlined in the co-founders' best-selling books 80/20 Running and 80/20 Triathlon.
Matt Fitzgerald
Co-founder Matt Fitzgerald is an acclaimed endurance sports coach, nutritionist, and author. His many books include The Endurance Diet, 80/20 Running, and How Bad Do You Want It? Matt’s writing also appears regularly in magazines and on websites such as Women’s Running and outsideonline.com. His online training plans have helped thousands of athletes of all experience and ability levels achieve their goals. Certified by the International Society of Sports Nutrition, Matt has consulted for numerous sports nutrition companies and he is the creator of the Diet Quality Score (DQS) smartphone app. A lifelong athlete, he speaks frequently at events throughout the United States and internationally. Matt can be reached at matt@8020endurance.com.

Jim Vance
Jim Vance is an elite endurance sports coach, author, and sport technology and training consultant based in San Diego, California. He coached 2016 US Olympic triathlete Ben Kanute to performances that include:
- American Record holder – Ironman distance, 7:37:01 (Challenge Roth 2023)
- 2x Silver Medalist at the 70.3 World Championships (2017, 2022)
- 4x Escape from Alcatraz Triathlon Champion
- Island House Triathlon Champion
- 5 top-10 performances at 70.3 World Championships
- 4x WTCS Mixed Relay Medalist (2x Hamburg, Tokyo, Abu Dhabi)
- 3x 70.3 Champion (2x Oceanside, Texas)
- World Cup Silver Medal, Chengdu, China
- #8 PTO World Ranking, 2021
Other athletes Jim has coached include 2x World Junior Championships qualifier Arturo Beltran and 2021 U23 National Champion Grace Walter. Jim has written two books, Triathlon 2.0 and Run with Power, and co-edited Triathlon Science with best-selling training author Joe Friel. A 4-year letter-winning cross country and track athlete at the University of Nebraska, Jim later turned to triathlon, winning two amateur world championships and training at the Olympic Training Center, before moving to Ironman racing with several top finishes, including third place at Ironman Florida in 2006.
Jim continues to work with athletes worldwide, from beginner to elite, in swimming, cycling, running, and triathlon, and partners with companies bringing new technology to the sport.

