You’ve done the training. Now it’s time to make sure your nutrition can keep up.
The goal isn't to completely change your diet in race week. It’s to arrive well fuelled, well hydrated and ready to perform, then give your body what it needs to recover afterwards.
Here’s how.
24–48 Hours Before: Fuel & Hydrate
The work starts before race morning.
As race day approaches, carbohydrate becomes increasingly important. Carbohydrate is stored in your muscles and liver as glycogen, which provides an important source of energy during high-intensity exercise.
In the 24–48 hours before your HYROX, prioritise familiar carbohydrate-rich foods alongside your normal protein intake.
Think:
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Rice, pasta and potatoes
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Bread and bagels
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Oats and cereal
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Fruit
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Easy-to-digest snacks
This isn't the time to dramatically change what you eat or experiment with new foods.
Race-day hydration starts before race day too.
Drink consistently throughout the day rather than trying to catch up by drinking huge amounts the night before or morning of your race. Electrolytes can be super useful during this period.
The aim is simple: start the race hydrated rather than trying to fix dehydration once you're already competing.
Race Morning: Start Ready
Your pre-race meal should give you energy without leaving you feeling heavy when you hit that first 1 km run.
A larger meal around 2–4 hours before your start time gives your body time to digest.
Make carbohydrate the focus, include some protein if it works for you, and consider keeping very high-fat and high-fibre foods lower if you know they cause digestive issues when you exercise.
Your meal could look like:
Option 1: Oats + banana + honey + yoghurt
Option 2: Bagel + eggs + fruit
Option 3: Toast + banana + yoghurt
Option 4: Rice + eggs or another lean protein source
There isn't one perfect HYROX breakfast.
The best option is something you've eaten before training and know works for your body.
Race day isn't the day to experiment.
30–60 Minutes before: Top Up
Depending on when you last ate, a small carbohydrate top-up before your start can give you another readily available source of energy.
This might be:
- A carbohydrate drink
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An energy gel or chews
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A banana
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A simple carbohydrate-based snack
You can also continue sipping fluid during this period rather than suddenly drinking a large amount immediately before entering the start tunnel.
The goal isn't to feel full.
It's to stand on that start line feeling fuelled, hydrated and ready to go.
During Race: Stay Fuelled
Whether you need additional fuel during HYROX depends on your expected race duration, intensity, individual needs and what you've eaten beforehand.
For faster times, taking on significant nutrition during the race may not be necessary.
For athletes who expect to be competing for longer, consuming carbohydrate during the event can become more useful.
But there's an important rule:
Don't try something on race day that you haven't tested in training.
Carbs + Electrolytes
Rhise Performance Fuel provides carbohydrate and electrolytes together, helping you take on fuel and fluid without needing to eat solid food mid-race.
Prepare your strategy during training and know roughly when you're going to drink rather than waiting until you suddenly feel depleted.
Because once you feel completely empty, you've probably left it too late.
Hydration During Your Race
How much you need to drink is individual.
Your sweat rate, race duration, environment and how well hydrated you were beforehand all influence your needs.
Rather than forcing yourself to drink at every opportunity, use the available stations strategically and drink according to your established race plan and thirst.
If you're a heavy or salty sweater, electrolytes can be particularly relevant because you're losing sodium alongside fluid through sweat.
Rhise Hydration provides electrolytes without relying on carbohydrate for energy, making it an option before and after your race or alongside a separate fuelling strategy.
Recover
Crossing the finish line isn't the end of your nutrition plan.
Your body has just completed a hard combination of running, sled work, lunges, rowing, skiing, carries, burpees and wall balls.
Now the focus changes from performance to recovery.
There are three priorities:
Protein. Carbohydrate. Rehydration.
1. Protein
Protein supports muscle repair and recovery after exercise.
A serving of high-quality protein after your race can be a convenient way to start the recovery process, particularly if you're not ready for a full meal immediately.
Rhise WPI provides a simple way to get high-quality whey protein in after you finish.
2. Carbs
Your carbohydrate stores have taken a hit too.
Include carbohydrate in your post-race nutrition to begin replenishing the glycogen you've used during your HYROX.
Fruit, rice, potatoes, bread, cereal and other carbohydrate-rich foods can all contribute.
Even better: combine your carbohydrate and protein as part of a proper post-race meal when you can.
3. Fluid + Electrolytes
You'll continue losing fluid through sweat right up until you finish.
Start replacing it afterwards.
Water is important, but if you've sweated heavily, replacing electrolytes can also form part of your rehydration strategy.
Don't feel like you need to drink litres immediately.
Continue drinking gradually throughout the hours following your race.
Evening: Recovery Doesn't Stop
There's one more piece of the recovery puzzle that's easy to overlook:
Sleep.
Sleep plays a major role in recovery, and your post-race routine should support getting back into your normal sleep schedule.
Eat a balanced evening meal containing carbohydrate, protein and plenty of nutrient-dense foods. Keep rehydrating. Then give your body the chance to rest.
Rhise ReCharge can form part of your normal evening routine alongside the fundamentals of good nutrition, hydration and sleep.
Start Ready. Stay Fuelled.
You can't control everything that happens on HYROX race day. But you can control how you arrive.
Fuel before you need it. Hydrate before you're thirsty. Practise your strategy in training. And once you've crossed the finish line, give recovery the same attention you gave performance.
Start ready. Stay fuelled. Recover properly.
HYROX Nutrition FAQs
What should I eat before a HYROX race?
Prioritise a familiar carbohydrate-rich meal around 2–4 hours before racing. Foods such as oats, rice, bread, bagels, bananas and other easily digested carbohydrate sources can work well.
Should I carb-load for HYROX?
Increasing your carbohydrate intake in the lead-up to the race can help maximise glycogen availability. Exactly how much you need depends on your body size, normal diet and expected race duration.
Should I take a gel during HYROX?
Potentially. It depends on your expected race duration, previous meal and individual tolerance. If you're going to use gels or other carbohydrate during HYROX, practise your strategy during training first.
Do I need electrolytes for HYROX?
Not everyone has identical requirements. Electrolytes can be particularly useful for athletes who sweat heavily, lose a lot of sodium through sweat or are racing in warm conditions.
What should I eat after HYROX?
Prioritise protein and carbohydrate alongside fluids. This supports muscle recovery, glycogen replenishment and rehydration after your race.
What should I drink during HYROX?
Your needs depend on your sweat rate, race duration and environment. Water may be sufficient for some athletes, while others may benefit from a carbohydrate-electrolyte drink as part of their planned fuelling strategy.
