It is difficult to outwork a bad diet. If you are doing a 238 mile long race, you have very different dietary considerations than most people; and quite likely

It is difficult to outwork a bad diet. If you are doing a 238 mile long race, you have very different dietary considerations than most people; and quite likely have a diet designed to maximize caloric intake. A large chocolate shake from mcdonalds is 850 kcal. By your estimate, this is is 51 minutes of work to burn off. Possible, yes. Useful if you need the calories to run 240 miles, yes. Easier than not having the shake in the first place, no.