Supplements for Runners — Running Nutrition | 6AM Run

The day before a marathon, the training is done. Nothing you do in the next 24 hours will make you fitter — but plenty can make tomorrow harder than it needs to be. The goal today is simple: arrive at the start line rested, fueled, hydrated, and bored. A quiet, uneventful day-before is exactly what you want.

Here is the hour-by-hour checklist I give every runner I know. With the New York City Marathon coming up on November 1, a lot of you are about to live this day. Live it slowly.

Morning: Wake Up Normal, Eat Normal

Do not sleep in until noon trying to "bank" rest, and do not set a 5 a.m. alarm either. Wake up close to your usual time. Your body runs on rhythm, and a wild schedule swing today just makes tonight's sleep harder.

Eat the breakfast you have eaten before every long run in this training block — same foods, same rough size. Today is the start of your final carb load, not a food adventure. If you want the full three-day plan, I laid it out in How to Carb Load for a Marathon. The short version: carbs at every meal and snack, a little less fiber and fat than usual, and nothing you have not tested in training.

Start sipping fluids early. You want to top off hydration across the whole day, not chug a gallon at 9 p.m. and spend the night in the bathroom. Our Race Week Hydration Plan covers what to drink and when — pale-yellow urine by afternoon is the simple check.

Late Morning: The Shakeout (or Not)

A 15- to 20-minute easy shakeout jog loosens the legs and burns off nervous energy. Keep it embarrassingly slow. A few 20-second strides at the end are fine if that is part of your normal routine. If you prefer complete rest the day before, that is fine too — plenty of great marathoners never run the day before. What matters is that you do what you practiced before your long runs, not what someone at the expo is doing.

After the shakeout, stay off your feet as much as life allows. This is not the day for a walking tour or a big shopping trip. Legs up on the couch is training today.

Midday: Lay Everything Out

This is the most important hour of the day. Lay out, physically, everything tomorrow needs:

• Shoes, socks, shorts, top, and layers you can throw away at the start
• Bib pinned to the shirt you will actually race in — pin it now, not at 5 a.m.
• Watch charged, phone charged, headphones if you race with them
• Your full race fuel, counted out — every gel, chew, or gummy, plus one extra
• Anti-chafe stick, sunscreen, hat, sunglasses, and a trash bag for a cold or wet start
• Post-race bag: warm layer, water, and something salty-sweet to eat

Count your fuel against your plan. If you have not built one yet, the Marathon Fueling Calculator walks you through carbs per hour by body weight and pace. Most runners need 60 to 90 grams of carbs per hour — far more than most first-timers pack.

Personally, this is where I keep it simple: I count out my Marathon Gummies the day before and split them into two pockets so I am never digging around mid-race. I use them because they sit easy on my stomach, there is no sticky gel mess on my hands at mile 18, and I built them as a runner who got tired of forcing down fuel I dreaded. Whatever brand you use, the rule is the same: nothing new on race day, and everything counted today.

Afternoon: Expo Rules and the Big Lunch

If you are picking up your bib at an expo, go in with a list and a time limit: bib, shirt, out. Do not sample every new food and drink on offer, do not buy miracle socks you have never run in, and do not stand for two hours listening to talks. Get in, get out, sit down.

Make lunch your biggest meal of the day rather than a giant late dinner. A large lunch — pasta, rice bowl, sandwiches, the carb-heavy foods you know — gives your stomach time to clear before the start. Dinner tonight should be early, modest, and familiar. I covered the specifics in What to Eat the Night Before a Marathon: think plain carbs, low fiber, low fat, and done by about 7 p.m.

Check tomorrow's weather one last time and adjust your throwaway layers and start-line plan. Then stop checking it. The weather is the weather; you have a plan for it now.

Evening: Set Two Alarms, Then Switch Off

Set your race-morning timeline backwards from the start: travel, security or ferry/bus, bag check, warm-up, corral. Write it down. Set two alarms. Charge everything overnight.

Plan tomorrow's breakfast tonight too — the exact food, the exact time, ideally two to three hours before your start wave. If you need a refresher, What to Eat the Morning of a Marathon has the protocol that keeps stomachs calm.

Then do something relaxing that is not running content — a film, a book, a walk around the block. Scrolling race predictions until midnight turns normal nerves into no sleep.

Tonight: About Sleep — Read This Carefully

Here is the truth that saves a lot of race days: sleep tonight matters less than sleep two nights ago. Almost nobody sleeps well the night before a marathon, including the elites. One broken night, on top of months of training and two good nights before it, does not ruin your race. Adrenaline is a powerful thing at 9 a.m.

So get in bed early, keep the room cool and dark, and if you lie awake, rest anyway. Lying still with your eyes closed is not nothing. Do not take a sleep aid you have never tried, do not panic at 2 a.m., and do not rewrite your race plan in the dark. Your plan — pacing included, see How to Pace a Marathon — was made by a calm version of you. Trust that person.

What NOT to Do Today

• No new foods, drinks, supplements, or gear — zero exceptions
• No "testing" your legs with a hard workout or a fast finish
• No foam-rolling yourself into a bruise or trying a massage gun for the first time
• No drinking alcohol to relax — it wrecks the sleep you are trying to protect
• No comparing your training to anyone's on social media

Tomorrow Starts Tonight

When the checklist is done, your only job is to be proud and calm. You did the months of early alarms to get here — the 6 a.m. miles nobody saw. Tomorrow is the celebration lap for all of that work. And when you cross the line, start recovery right away: fluids, carbs, protein, and rest, the way I lay out in How to Recover After a Marathon. Personally, FinishLine is what I reach for after long runs and races — it is the recovery side of the same system I trained with, and having it waiting in my bag means I actually start refueling instead of collapsing on the couch first.

Lay it out. Eat the carbs. Trust the plan. See you at the start line.

What is the one thing on your day-before checklist you never skip — the lucky socks, the pinned bib the night before, or something else entirely?

— Hami, 6AM Run