Marathon fuelling in Running

Reviewer Excellent -- specific timing windows backed by real physiology, not just generic tips.

Moderator Squarely and deeply about marathon fuelling strategy: glycogen storage limits, the 36-hour fiber taper, stomach-emptying physiology, why digestion happens in the small intestine not the stomach, and specifically why/when to start taking calories once the race begins.

Reviewer Real numbers, real mechanism, and it corrects bad common advice - excellent.

Moderator Nuanced, accurate treatment of carb absorption limits during a marathon - glucose/fructose transporter ceiling, GI distress risk, personalized targets (60-90g/hr recreational vs up to 120g/hr elite).

Reviewer Explains the mechanism, which is exactly why it's convincing.

Moderator Corrects a specific, non-obvious mistake - waiting until minute 60 to take the first gel - with a clear mechanism (liver vs. muscle glycogen, blood glucose transport) and a concrete protocol (gel at start, then every 20 min).

Reviewer Accurate, specific numbers, and it walks you through training through race day — excellent teaching.

Moderator Squarely and entirely about marathon fueling start to finish — glycogen physiology, hitting the wall, gel/food options, the rule of 15g carbs/15min, carb-loading grams-per-kg, pre-race breakfast timing, even training your gut on fasted runs. This is the core of the sub-skill, no filler.

Reviewer Clear, specific, no fluff — exactly the fueling breakdown a runner needs.

Moderator This is the real thing — pre-run fueling by session length, carb-loading mechanics with an actual gram-per-kilo target, and a clear split between 5k/10k (skip it) and half/full/ultra (fuel during). Every minute of the excerpt is on-topic. This is what "fueling" as a sub-skill should look like.

Reviewer A dietitian giving you an actual number to hit, not just 'eat more pasta.'

Moderator Carb loading is a core, central piece of marathon fueling strategy, and that's the entire subject here — nothing else discussed.

Reviewer One of the best of the batch — explains the why, not just the what, with a real progression you can follow.

Moderator Purely marathon race-day fueling from front to back: gut-training progression months out, gel tolerance building, in-race timing and the physiological reason for GI distress (blood flow shifting from gut to muscles), and a concrete 30-60g carbs/hour target. Nothing off-topic.

Reviewer Actual protocol, not a slogan — find your tipping point and bank it before race day.

Moderator Entirely about race-day fueling practice — hydration planning and a specific hourly-carbohydrate testing protocol. Nothing else covered. Squarely on topic.

Reviewer Specific, usable numbers with the right caveats — plan your race off this.

Moderator Answers the exact question a marathoner planning their fueling needs answered: how many gels, spaced how, plus a nod to hydration/electrolytes alongside. Squarely the sub-skill, no detour.

Reviewer The kind of fuelling advice that gets results: a week-by-week climb from 45 to 80 g/h and why it works. The 100-120 g/h overreach is aggressive, so build up gradually and back off if your stomach protests.

Moderator Gut training for marathon fuelling: why you need to train your stomach to take 60-90 g of carbs an hour, plus a 10-week progression from 45 g/h up to 80 g/h with a short 100-120 g/h overreach before easing back to 80 for race day. Adds glucose-plus-fructose gels for better absorption. Squarely on topic.

Reviewer Concrete number, real correction - this is the kind of advice that prevents a bad race day.

Moderator Directly corrects a specific, real fueling mistake (relying on breakfast alone) with a concrete number - minimum 40g carbs/hour - plus hydration and electrolyte guidance. Squarely the sub-skill.

Reviewer The plate-ratio trick alone makes this worth watching.

Moderator Directly on the sub-skill - what carb loading actually is (glycogen storage), when to do it (before a half/full), and a practical way to apply it (plate ratio).

Reviewer Practical, specific, and honest that it takes practice - exactly what a first-timer needs.

Moderator Directly and specifically about the exact sub-skill - taking gels during a marathon: sip-and-step technique, starting with half a gel, training your stomach on easy runs first.

Reviewer Real teaching, real mechanism — one of the stronger ones in this batch.

Moderator Explains from first principles why marathon-and-up distances need fueling and 5k/10k mostly don't: glycogen depletion timing, the physiological difference between anaerobic-limited short races and fuel-limited long ones. Squarely on topic and goes deeper than most.

Reviewer Practical, race-specific tips you can actually use — especially the Heartbreak Hill fueling timing.

Moderator Dead center on fuelling and hydration, just localized to Boston's course and weather. Covers expo temptation, cold-weather carb burn, Heartbreak Hill timing, aid-station formula — all fuelling, all the time.

Reviewer Real, specific, evidence-aligned fueling advice - worth a runner's time.

Moderator Beetroot (nitrate loading), electrolytes, race-day fuel - this is specifically marathon nutrition strategy, exactly the sub-skill, not training or recovery bleeding in from elsewhere.

Reviewer Good myth-busting on carb loading, with real numbers and the hydration side-effects most people miss.

Moderator Entirely about carb loading and race-day fueling for a marathon — timing (final 2 days, not 3-4), quantities (8-10g carbs/kg), the blood-glucose rollercoaster explanation, and the hydration trade-off that comes with it. On-topic throughout.

Reviewer Good numbers if you're patient enough to dig them out of the vlog chatter.

Moderator Whole thing is marathon fueling front to back — general fueling philosophy, then a real carb-loading protocol (2-day vs 3-day, g/kg targets), then race-day mechanics: gel timing pre-start and an 80-100g carb/hour target. Squarely on topic.

Reviewer Specific and well reasoned: 30 g every 20 minutes from the start, caffeine early so it lands late. It only works if your gut can handle 90 g an hour, and it's one runner's plan rather than a how-to-build-yours.

Moderator Race-day gel plan for the Chicago Marathon: 90 g of carbs an hour, a 30 g gel at the start and every 20 minutes after, caffeinated gels at 40 and 80 minutes so the caffeine peaks in the second half, and why the late gels still help. Squarely about marathon fuelling.

Moderator Three ways to avoid hitting the wall in a marathon: carb-load properly in the days before, top up carbs on the run with a gel every 5 km or every 30-40 minutes (before you feel you need it), and stay disciplined in the first half so you don't burn through your stores. Explains why the wall happens. Squarely about marathon fuelling.

Reviewer Clear and correct: explains the bonk, then a simple plan of carb-load, a gel every 30-40 minutes before you need it, and don't go out too fast. No carbs-per-hour numbers and nothing on practising it in training.

Reviewer Good practical detail, especially the pace-scaled gel timing — a notch more ultra-heavy than marathon-heavy.

Moderator A full race-day routine walked through step by step: breakfast timing, warmup, gel cadence, and it explicitly closes with pace-adjusted guidance for marathon runners specifically ('road marathon, once every five miles'). Solidly on topic.

Reviewer Solid, honest first-marathon lessons — nothing revolutionary but it's true and specific.

Moderator Entirely a marathon/long-run fueling explainer: what fueling is, glycogen basics, the 90-minute 'sweet spot', absorption lag, then personal lessons on caffeine dosing, gel texture, and carrying gear. On-topic throughout.

Reviewer Real, usable numbers and a race-morning plan you could copy today.

Moderator Squarely about endurance fuelling mechanics -- glycogen limits, fat adaptation, and specifically 'training the gut' -- explicitly tied to marathon-adjacent racing. Pitched at ultra distance so some of it (multi-hour fat-burning strategy) goes beyond standard marathon needs, but the core framework (train your nutrition, carbo-loading nuance, race-morning meal) is exactly the marathon-fuelling playbook too.

Reviewer The most rigorous, numbers-backed fuelling breakdown in this group — build your plan around this one.

Moderator Again framed as ultra, but the physiology she teaches — carb vs fat reliance by pace, GI-distress ceiling, grams of carbs/hour by athlete type — is generic endurance-running science that maps directly onto marathon fuelling.

Reviewer Clear physiology, a real formula you can use on race day, and a sensible cap so you don't overdo it.

Moderator Framed and titled around the half marathon, not the full — but the underlying mechanism (glycogen lasts ~90 minutes, then a 100-calorie-per-mile-beyond-90-minutes rule) is explicitly extended out to finish times of 2+ hours, which is exactly marathon territory for most recreational runners. Close cousin to the target skill, not a bullseye.

Reviewer Solid, credible advice, but you have to sit through a lot of vlog narrative to get it.

Moderator An Olympian's day-in-the-life nutrition vlog for marathon training -- fasted-training rationale, glucose-regulation timing around harder sessions, electrolyte/coffee routine. Squarely about training fuelling, delivered as personal practice rather than a structured lesson.

Reviewer Good concrete numbers, but it's also functioning as a sponsor plug for the products shown.

Moderator Squarely about the creator's personal marathon-training fuelling approach -- pre-run carbs, in-run carb intake by the gram, daily carb targets, and the glycogen-replenishment rationale behind all of it.

Reviewer The fueling bits are the best part — clears up the classic gel and carb-load mistakes.

Moderator This is a 7-tip first-marathon prep video, and fueling only owns about half the runtime — tapering, sleep and pacing eat the rest. But the fueling chunk (electrolytes vs. plain water, gel-every-45-minutes cadence, what carb-loading actually means) is substantial enough that I can't call it tangential. It earns a solid "covers it among other things," not a bullseye.

Reviewer One sharp, race-saving tip: train with what's actually on the course.

Moderator Most of this is training distribution (80/15/5, progressive long runs), but it closes with a real fuelling section - hitting the wall, and the classic mistake of training with gels that aren't what's actually on the course. That's squarely our sub-skill, just not the whole video.

Reviewer Solid on the science and the big-picture call, light on race-day specifics.

Moderator Directly engages a core marathon-fuelling question — carb loading vs. intermittent fasting — with real physiology (glucose/insulin, fuel systems by intensity) and a clear practical verdict (don't fast around hard training, prioritize recovery nutrition). Less a race-day how-to than a strategic nutrition-philosophy debate, but still squarely fuelling-relevant.

Reviewer Handy, realistic fuel ideas, but they're three snack picks with no timing or per-hour targets, so you still need a plan to use them.

Moderator Three cheap fuel picks from a running coach: Pop-Tarts as a pre-run carb load (around 75 g of carbs is the target before runs over 90 minutes), Coke on the trails for caffeine, carbs and cold, and fruity candy during the run. About what to eat for long runs and marathons, not a full plan.

Reviewer Actually useful numbers you can apply — protein targets, breakfast timing, real food examples.

Moderator Heavier on actual nutrition science than the other ultra videos — daily caloric needs, protein g/kg, recovery foods, race-day breakfast composition. Still framed around ultra distances, but most of the guidance applies just as well to marathon runners.

Reviewer Genuinely useful numbers and math you can copy — just remember to scale it down for marathon pace.

Moderator This is ultramarathon (50mi) fueling, not marathon — different race duration and pacing — but the actual content (calories/hour rule of thumb, g carb/kg/hour, electrolyte/sodium notes, sports-nutrition vs real food mix) is the same fueling science a marathoner needs and is explicitly framed as generalizable starting points. Close enough to count as solidly relevant, not core marathon content.

Reviewer Sensible framework, and 'nothing new on race day' is the right rule. But there are no numbers, no carbs per hour and no timing, so it's a checklist rather than a plan.

Moderator Marathon nutrition primer from a running-store expert: split it into pre-race (carb-focused breakfast about four hours out, electrolytes, hydration), during the race (gels, hydration) and post-race recovery, test products in training, and never try anything new on race day. Broad nutrition rather than a focused in-race fuelling plan.

Reviewer The electrolyte and fueling-frequency tips are genuinely practical for a first-timer.

Moderator This is a 'first marathon' tips video, and fueling is 2 of the 5 tips (electrolytes at aid stations, fueling every 3 miles/30 min) — real content, but sandwiched between pacing strategy and mental course-breakdown tips that have nothing to do with fueling. Covers it, doesn't center it.

Reviewer Good primer on the physiology, but the actual fueling instructions aren't in what's shown here.

Moderator Opens with a genuinely good explanation of carb-vs-fat fuel partitioning and glycogen depletion (the Prius/Corvette analogy is memorable), explicitly framed as leading into 'how to carb load and how to fuel during a race' — but the excerpt cuts to an unrelated cold-morning speed workout vlog before delivering the actual how-to. On-topic in intent, incomplete in this transcript.

Moderator An experienced ultrarunner's fuelling for a 25-mile long run: a big sodium-loaded drink on waking, eating enough beforehand, then maple syrup in a soft flask on a waist belt for roughly 150 g of carbs an hour. Squarely about long-run and marathon fuelling, but it's one runner's extreme personal setup.

Reviewer One ultrarunner's setup. The 150-170 g of carbs an hour quoted is far above the usual 60-90 g/h and takes serious gut training, so don't copy it as a starting point.

Reviewer Shows the idea in action, but no numbers or products to actually copy.

Moderator This is literally a fuelling experiment on a long run - deliberately taking on more calories than usual to build gut tolerance ahead of an ultra. Dead center of the sub-skill.

Reviewer Useful principles if you filter out the ultra-specific parts.

Moderator This is ultra fuelling, and the guest is explicit that ultra demands differ from a road marathon — variable intensity, spread-out aid stations, more solid food. Real overlap with marathon fuelling principles but it's framed around a longer, different race.