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Message: <blockquote data-quote="sw600" data-source="post: 2609121" data-attributes="member: 564651">It's amazing how far you CAN get without carbs, but I do need them for longer rides. I'm not keto though.I never 'carb load' beforehand for cycling since it's easy to take stuff with you (less fun for running though I guess). A regular 55km circuit I do takes about 2h and I just do that fasted (I'll still end up with a spike to 10-12 though). If I'm going to be out for more than 3 hours I'll have some breakfast including some kind of oaty thing (I don't have breakfast on a non-riding day). While riding I eat carbs since they just go straight in and straight out again, I don't think there is any problem there. I have met the odd person who rides keto, but not many.In theory you can ride forever without carbs if you stick to Z2 efforts. One ride last summer I did the first 4 hours with a couple of glucose gels, then the last 4 hours without anything (zero carb electrolyte drink only). Was a lot slower but perfectly possible.In general I'm erring on the side of "don't worry about spikes while you're exercising".</blockquote>

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