Good one King!
Pete, not sure what I can contribute that would be helpful. I believe in ultra events there are a few keys. First is nutrition management, carbs/protein/fluid and electrolytes. You already have a handle on that, I would just caution that your crew needs to be aware of signs and symptoms of shortages in any of these elements so they can "force" you into staying on task. Second is mental outlook. You MUST believe you will finish under all circumstances, no doubts whats so ever. Seems simple in the early hours, may not be as you fatigue. Know you limits. If you know you get groggy and can't stay awake for 24 hours then plan a 5 minute cat nap early evening. I chatted with a multiple 100 miler winner who had the philosophy of go hard as long as you can then hang on til the end, personally I find slow and steady works for me but that's probably why he's winning and I'm just slow and steady! Crew is key if you have one, prep them on what they are to look for in you and what they are needing to make sure you do so that when you don't want to make those decisions they will.
I have crewed for a 24 hour duo. One had no issues outside of staying hydrated which I kept an eye on by noting fluid drank between laps (changed out bladders every lap) while the other fatigued much earlier then any of us would have thought so keeping the food going in and his mood positive was key.
Training suggestion is to go long Sat later in the day so you do some night stuff when tired then get up early Sunday and ride for a couple of hours OR ride for a couple of hours late Fri after working all day then get up early 4-5am start and ride long on Saturday.
