80/20 Triathlon: Discover the Breakthrough Elite-Training Formula for Ultimate Fitness and Performance at All Levels

Maybe I'll try this out at some point. But I refuse to stop doing distance-based exercise. I don't know how to do timed runs without resorting to out-and-back courses, which are boring.

The author definitely resorts to a lot of anecdotal evidence (it works for his clients -- even though there's no control group in that sample of individuals -- therefore it must be effective for everybody) and very small sample-size studies for "scientific proof" that 80/20 works. I'm willing to try it, but I'm not convinced it's the end-all-be-all for becoming a better runner or triathlete.

This is a book best pared with something like the Triathlete's Training Bible. 80/20 Triathlon helps the athlete by giving them detailed training plans to follow based on the 80/20 rule, of going slow 80% of the time, and fast 20% of the time. Which seems mostly based on experience at looking at the best athletes than hard science. Still, if it works, it works. My main criticism of the book is that it could be more detailed, but it's fantastic as a reference for training plans, having a good workout library, and great tips for beginners.