Yes_Really

so the optimal plan for riders would be to never buy anything?

Your timeline suggests that you weren't vegitarian/vegan at the time of your Boston marathon, for which you did, conversely, make a good qualifying time. But were for the 100-miler.

Do you think your 100-mile time was negatively impacted by your diet choice? Ie, 28-hours is definitely in the slower range of 100-mile ultras. (seriously asking).