My last two books were both written by vegan endurance athletes. Eat & Run by Scott Jurek and more recently Finding Ultra by Rich Roll. Both were enjoyable reads and inspiring. What I like about Finding Ultra is the focus on multi-sport athletics (triathlon). Rich also has a very unique background; having been a standout student, lawyer and national-level competitive swimmer…all the while battling alcoholism.
If you like Eat & Run, you will definitely enjoy Finding Ultra. However, I did think Eat & Run was a better book overall. It interleaved more plant-based nutritional guidance throughout the book. Finding Ultra, while it did have nutritional advice, seemed to be pitching supplementation using products from a company Rich Roll is involved with. Eat & Run focused on recipes you can cook at home – I like that. I also just think Eat & Run was better written and overall more inspiring a story (Scott Jurek has done some pretty gnarly races and has a much longer endurance race history!).
So do read both books if you can. If you need to pick one, go with Eat & Run.