My recommendation on how to approach whole-day rides remains to sneak up on them when they're not looking. Just gradually extend your mileage, see what works, and adapt it a bit as you go. If, to do 40 miles, you need one cake stop, for your first 60 miler, try two. Then adapt again - you might find that one was enough. When you've reached all day, experiment a bit - if you feel you were stopping too often, try fewer. If you want to try energy bars, do that. Find what works for you, but don't overthink it.
TrevA wrote: 16 Oct 2024, 5:39pm
A lot of the Pro’s use home-made rice cakes to get their calorie fix (made by the soigneurs or team chefs).
Reminds me of my first 12-hour race, decades ago. I'd been recommended having rice pudding handed up in a bottle with the top cut off. I tried it, and got a face full of milk. It was home-made rice pudding - very nice, but not good for pouring down your neck. No-one mentioned the obvious point that you need Ambrosia-type stuff.