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HYROX Nutrition: What to Eat in the Week Before Race Day
Race week nutrition is where HYROX results are won or lost before you set foot on the floor. Here is exactly what to eat, when to eat it, and what to avoid in the seven days before your race.Most HYROX athletes nail their training block and then ruin race week without realising it. They eat too little on the days leading up to the race, try something new on race morning, and show up with suboptimal glycogen stores and a nervous stomach. The race itself is only 60 to 90 minutes. Your preparation in the seven days before it determines a significant portion of how that 60 to 90 minutes goes.
HYROX is a high-intensity hybrid event. It demands both your aerobic engine and your muscular endurance, and both of those systems run on carbohydrate. Getting race week nutrition right is not complicated, but it does require intention. This guide gives you a day-by-day framework you can actually follow.
Unlike a marathon where you are primarily burning fat, HYROX operates at an intensity where carbohydrate is the dominant fuel. The running segments alone average 75 to 85% of maximum heart rate for most athletes. Add the station work and your glycogen demand is high. Arriving underfuelled directly affects your split times.
The Seven Days Before Your Race: A Day-by-Day Guide
Train normally. Eat normally.
Nothing changes yet. Continue your standard training and eating patterns. This is not the week to experiment with new foods or to start loading aggressively. Consistency here sets the baseline your body will peak from.
Last hard training session. Prioritise recovery nutrition.
If you have a final quality session this week, do it now. After that session, prioritise your recovery: 40g protein, 80g carbohydrate within 45 minutes of finishing. From here, training volume drops sharply.
Taper. Keep carbs consistent.
Training drops significantly. Carbohydrate intake stays the same or increases slightly. Because you are training less, the carbs you are eating have nowhere to go except into your glycogen stores. That is exactly what you want.
- Oats, rice, pasta, sweet potato, sourdough bread: all good
- Avoid high-fibre options like bran, lentils, and cruciferous vegetables in large quantities from here
- Hydration: aim for clear to pale yellow urine throughout the day
Easy movement. Start thinking about fibre.
Keep it simple. Easy walk or very light movement session only. Continue reducing high-fibre foods gradually. Not because fibre is bad but because you want your gut to be clean and calm on race day, and a lower-fibre approach in the final days helps with that.
Begin the carb load. Add sodium.
Increase carbohydrate intake meaningfully: target 7 to 10g per kilogram of bodyweight across today and tomorrow. Rice, pasta, potatoes, and bread are your vehicles. Pair this with slightly elevated sodium intake to help your body retain the glycogen-associated water and stay properly hydrated.
- Good carb load foods: white rice, pasta, sourdough, potatoes, bananas, white bread, sports drinks
- Reduce fat intake on carb load days: fat slows gastric emptying and competes with carbohydrate storage
- Keep protein moderate: 1.6 to 2g per kg of bodyweight is enough. No need to go higher
Continue carb loading. Eat your last big meal.
Day 2 is when most athletes get their final substantial meal in. A large pasta or rice-based dinner this evening is better than the night before race day, when the volume of food can disturb sleep. Keep it familiar, well-cooked, and low in fat and fibre. Nothing new on the plate.
Eat light. Sleep well. Prepare your race morning kit.
Lighter meals today. Lunch can be carbohydrate-focused but modest in size. Dinner should be early, familiar, and easy to digest: rice or pasta with a simple sauce and a moderate protein source. No alcohol. Hydrate consistently. Lay out your nutrition for race morning tonight so there are zero decisions in the morning.
Race Morning: What to Eat and When
Race morning nutrition is simple in principle and often botched in practice. The goal is to top up your glycogen without putting anything in your gut that causes discomfort during the race.
Eat your pre-race meal three hours before your race start time. This gives your body time to digest and absorb before you are asking it to perform. If your race starts at 10am, you are eating at 7am. If it starts at 8am, you are up at 5am eating. Set the alarm.
- White toast or a bagel with jam or honey: fast, familiar, effective
- Porridge or oats with banana and a small amount of protein: slightly slower digesting but most athletes tolerate it well
- White rice with a small amount of salt: some athletes prefer this and it works well
- A sports drink alongside: helps with hydration and adds fast carbohydrate
- Coffee: fine if you are a regular coffee drinker and tolerate caffeine well on an empty stomach. Do not start a caffeine habit on race morning
High-fat foods (full English, avocado toast with a lot of fat), high-fibre foods (bran cereals, lots of vegetables), anything new you have not eaten before a training session, large volumes of food within two hours of race start, or dairy products if you are sensitive to them under stress. The race itself is the stress test. Race morning is not the time to find out your stomach does not like something.
During the Race: Fuelling on the Fly
HYROX races range from around 55 minutes for elite athletes to 100 minutes or more for most competitors. For any effort over 60 minutes, intra-race fuelling makes a measurable difference to your performance in the final stations and the final running kilometre.
Good intra-race fuel
- Isotonic gels (20 to 25g carb each)
- Caffeine gels if trained with them
- Sports drinks from water stations
- Chews or blocks if you prefer chewing
- Dates or dried fruit for some athletes
Avoid mid-race
- Whole food bars (digestion too slow)
- Thick protein bars
- Anything you have not tested in training
- Hypertonic gels without enough water
- Large volumes of anything at once
Take your first gel between running kilometres 2 and 3. If your race is going to be longer than 75 minutes, take a second gel around the halfway point. Practise this in training so your gut knows what is coming.
Hydration: The Race Week Variable Most Athletes Ignore
Hydration status has a direct impact on HYROX performance. Even mild dehydration of 2% of bodyweight measurably reduces power output and increases perceived effort. Race week is when most athletes inadvertently end up underhydrated because they are tapering, travelling, and not sweating as much as usual, so they drink less without realising it.
- Target at least 35 to 40ml of water per kilogram of bodyweight per day across race week
- Add electrolytes from Day 3 onward, particularly sodium and potassium
- Urine colour is your best guide: pale yellow throughout the day is the target
- Avoid large volumes of plain water immediately before the race. It dilutes electrolytes without improving hydration meaningfully. Use an electrolyte drink instead
- If you are travelling to the race venue, add extra hydration for travel days as aeroplanes and long drives are dehydrating
"The work is done. Race week is not about getting fitter. It is about showing up in the best state possible to do the work justice."
The mindset shift that separates smart racers from anxious onesRace week nutrition checklist
- Days 7 to 5: train and eat normally. No experiments, no restriction.
- Days 5 to 3: gradually reduce high-fibre foods and increase simple carbohydrates.
- Days 3 to 2: active carb load. Target 7 to 10g carbohydrate per kg of bodyweight per day.
- Race eve: lighter meals, early dinner, nothing new. Hydrate and sleep.
- Race morning: eat three hours before start. White carbs, familiar foods, no fat, no fibre.
- During race: gel between km 2 and 3, second gel at halfway if over 75 minutes.
- Hydrate consistently all week. Add electrolytes from Day 3 onward.
Built for race day. Not just training day.
Edge structures your entire HYROX training block including your taper and race week. Every session is placed with purpose so you peak at the right moment. The plan takes the guesswork out of how to train, how to taper, and how to show up ready.
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