HYROX nutrition: how to fuel training and race day

Most HYROX athletes spend months thinking about training and about 20 minutes thinking about nutrition. The nutrition piece does not replace the training, but it can meaningfully affect what the training produces and how you feel on race day.

Fuelling your training weeks

HYROX is a carbohydrate-dependent sport. Running at race pace and producing force across eight stations both draw heavily on glycogen. If you are training four or five days a week and consistently under-eating carbohydrates, you are not recovering properly between sessions and you are not getting the full adaptation from the training you are putting in.

Aim to eat enough carbohydrate to support the training you are doing. For most HYROX athletes training four sessions per week, this is somewhere between 4 and 6 grams per kilogram of bodyweight per day. On higher-volume or harder training days, lean toward the upper end. On rest days, you can back off.

Protein supports the strength adaptation from station and gym work. 1.6 to 2.2 grams per kilogram per day is the evidence-supported range for athletes doing resistance and endurance training simultaneously. Spread intake across meals rather than concentrating it in one sitting.

The week before your race

Race week is not the time to experiment. Eat what you have been eating throughout training. Slightly increase carbohydrate intake in the final two to three days to ensure your glycogen stores are full going into race day. This does not mean eating an enormous pasta dinner the night before. It means not skimping on carbs and eating consistently.

Avoid introducing new foods in race week. Gut issues on race morning are almost always trace back to something unfamiliar eaten the night before.

Race day morning

Eat a carbohydrate-based meal two to three hours before your race start. Something familiar and easy to digest: oats, toast with banana, rice with a small amount of protein. Avoid high-fat or high-fibre foods in the two hours before racing. They slow gastric emptying and can cause discomfort under exercise intensity.

If you have less than two hours before your race (common with morning starts), keep the meal small and fast-digesting: a banana, a gel, white toast. The goal is available fuel without a full stomach.

During the race

Most HYROX races take between 60 and 100 minutes for recreational athletes. In that time frame, mid-race fuelling is optional but not essential if you have eaten well beforehand. If your race is likely to exceed 90 minutes, consider one gel or a small amount of easy carbohydrate around the halfway point.

Hydration matters more than nutrition for races under 90 minutes. Drink water at aid stations if available. Do not overhydrate before the race. Arriving at the start line having consumed 1.5 litres of water in the previous hour is not an advantage.