FWIW, I use a custom drink mix from Infinit Nutrition for anything longer than about two hours. I drink watered down Gatorade for rides less than 2 hours, and try to go fasted for Z2 rides an hour or less. I do always have a gel or two available in case I need an emergency shot of carbs or caffeine or both. More details about my Infinit mix in the linked post below. Happy to go into more details if you’r interested.
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