I worried that my vegan diet might fail me. I worried that I'd run out of energy. I worried that the heat might prove too much. True, I wasn't as sore as I had been before going to a plant-based diet, and my recovery time was faster than ever. True, I almost never got congested, and whenever a cold or flu swept through Seattle, sending a lot of other runners to bed, I stayed healthy. And of course, I had battled Mount Si and prevailed, if a man could be said to prevail. I had also gone to California a week earlier and trained every day in the 100-degree canyons. But if you can imagine running 100 miles, you can imagine almost anything.

Ch. 11, p. 91 - Eat and Run (2012)