Hyrox nutrition and diet: the complete fueling guide for 2026

Hyrox isn't a marathon. It's not CrossFit. It's a brutal hybrid that demands you run 8km while destroying yourself at 8 functional workout stations: SkiErg, sled push, sled pull, burpee broad jumps, rowing, farmers carry, sandbag lunges, and wall balls.

Your nutrition strategy needs to match that unique demand. Get it wrong, and you'll bonk on the run, fail on the sled, or hit a wall at station 6 when your glycogen tanks are empty.

This guide breaks down exactly how to fuel for Hyrox, from your day-to-day diet to race day execution.

Hyrox nutrition at a glance

• Daily diet: 3 to 5 g carbs per kg on rest days, 5 to 7 g/kg on run days, 6 to 8 g/kg on sim or double days.
• Protein: about 1.6 to 2.2 g per kg a day, in 4 to 5 meals of 20 to 40 g.
• Carb load: 6 to 8 g/kg for the last 24 to 36 hours, with less fiber.
• Race morning: 1 to 2 g carbs per kg 3 to 4 hours before your wave, then 30 to 50 g about 1 hour before.
• During the race: water at the Roxzone. Carry 1 gel from the start if you expect to take over 75 minutes.
• After: 1 to 1.5 g carbs per kg plus 20 to 35 g protein within an hour.

Why Hyrox nutrition is different

Most endurance nutrition advice is built for steady-state efforts: run at a consistent pace, burn carbs predictably, refuel as you go. Hyrox breaks that model.

• Heart rate spikes: You go from running pace to max effort (sled push) and back, repeatedly.
• Glycolytic demand: Strength stations burn through muscle glycogen faster than running alone.
• Shorter duration: Most athletes finish in 60-90 minutes, which is not long enough for complex mid-race fueling.
• Higher protein needs: Sled pushes, lunges, and wall balls create muscle damage that requires recovery fuel.

The result? You need more carbs than a pure runner, more protein than a marathoner, and a race day strategy focused on pre-loading rather than mid-race gels.

Daily training nutrition for Hyrox

Your daily nutrition sets the foundation. Train under-fueled and you'll feel tired, fail to adapt, and arrive at race day depleted.

Notice those carb numbers are higher than typical gym advice. That's because Hyrox training burns serious glycogen by combining running sessions, strength work, and those grueling simulation workouts.

The protein difference

Marathon runners can often get away with 1.2-1.6g/kg protein. Hyrox athletes usually need a bit more. The sled work, lunges, and wall balls create eccentric muscle damage that requires more protein for repair.

• Aim for about 1.6-2.2g protein per kg of body weight
• Spread intake across 4-5 meals (20-40g per meal)
• Prioritize post-workout protein within 2 hours of training
• Don't sacrifice carbs for protein. You need both.

The Hyrox diet: what to eat day to day

There is no special Hyrox diet. The best one is a normal athlete diet that moves with your training: more carbs on the days you run hard or do a sim, fewer on rest days, and protein at every meal. Most Hyrox athletes do not under-eat protein. They under-eat carbs, because gym culture treats carbs as optional. For Hyrox, they are your main fuel.

These ranges sit inside the daily carb guidance from the American College of Sports Medicine: 3 to 5 g/kg for light training, 5 to 7 g/kg for about an hour a day, and 6 to 10 g/kg for 1 to 3 hours a day.

A sample Hyrox diet day (70 kg athlete, run plus strength)

• Breakfast (before a morning run): oats with banana, honey, and milk. About 80 g carbs, 20 g protein.
• After the run: Greek yogurt with granola and berries. About 50 g carbs, 25 g protein.
• Lunch: rice bowl with chicken, vegetables, and a little olive oil. About 90 g carbs, 40 g protein.
• Snack (1 to 2 hours before the gym): bagel with jam, or toast and a banana. About 60 g carbs.
• Dinner (after strength work): pasta with lean mince or lentils and tomato sauce. About 100 g carbs, 40 g protein.
• Evening: cottage cheese or a protein shake if you are short. About 20 to 25 g protein.

That day lands near 380 g of carbs (about 5.5 g/kg) and 150 g of protein (about 2.1 g/kg), which fits a run plus strength day. On a rest day, shrink the carb portions and keep the protein the same.

Hyrox diet basics

• Build each meal around a carb (rice, oats, potatoes, pasta, bread), a protein (meat, fish, eggs, dairy, tofu, lentils), and some fruit or vegetables.
• Eat 20 to 40 g of protein, about 0.3 g/kg, at each of 4 to 5 meals. This spreads muscle repair through the day.
• Put most of your carbs in the meals before and after hard sessions, not evenly across the day.
• Keep fat moderate. You need it, but heavy, fatty meals sit badly before running.
• If you want to lose weight, cut a little on rest days, not before a sim or a hard run.
• Rehearse your race-day breakfast before your long sims so race morning is not the first try.

For a week of sessions with what to eat for each one, see the 12-week Hyrox training plan with fueling. For a free race-day plan by station, try the Hyrox nutrition calculator.

Carb loading for Hyrox (24-36 hours before)

Carb loading isn't just for marathoners. A 60-90 minute all-out Hyrox race will drain your glycogen stores fast, especially at those high-intensity stations.

The goal: maximize glycogen stores so you start with a full tank.

• Target: 6-8g carbs per kg body weight in the 24-36 hours before race day
• For a 70kg athlete: 420-560g carbs over race day minus one
• Focus on familiar, easily digestible carbs: rice, pasta, potatoes, bread, oats
• Reduce fiber intake to minimize GI risk on race day
• Stay hydrated, because glycogen storage requires water

Race morning: what to eat before Hyrox

Your pre-race meal tops off glycogen and provides stable blood sugar for the start. Get the timing wrong and you'll either feel heavy or run out of fuel.

Key rules: Stick to foods you've tested in training. Avoid high fiber, high fat, and anything new. If you race in the afternoon, eat a normal breakfast and have your pre-race meal 3-4 hours before start time.

For hour-by-hour timelines for a 9am and a 2pm wave, see what to eat before Hyrox. Racing with a partner? The Hyrox Doubles guide covers how fueling changes when you split the stations.

During the race: fueling and hydration

Here's the truth most Hyrox athletes don't realize: if you're finishing in under 75 minutes, you probably don't need to eat during the race.

Your pre-race carb loading + race morning meal provides enough glycogen for 60-90 minutes of high-intensity work. Mid-race gels are optional, and they can cause GI issues when you're spiking your heart rate repeatedly.

• Under 60 minutes: Water and electrolytes only. No mid-race fuel needed.
• 60-90 minutes: Optional: a gel or sports drink if you feel it helps. Test in training first.
• Over 90 minutes: Consider 30-60g carbs during the race, taken in the Roxzone transitions.

What you absolutely need: hydration. The official Hyrox rulebook says water is made available at least once on each pass through the Roxzone, and a sports drink may also be offered. Take a few sips each lap. Gels are different: any nutrition you want must be carried on you from the start, and you cannot take food or drink from spectators or coaches.

Hydration strategy

The goal is to start the race well hydrated, not waterlogged. Drink steadily in the days before, and add sodium rather than chugging plain water.

• Day before: Drink 2.5-3.5L throughout the day (not all at once)
• Morning of: 500ml with electrolytes 2-3 hours before, then sip 200-300ml closer to start
• During race: a few sips at the Roxzone water station on each lap
• Pale yellow urine = good. Clear = overhydrated. Dark = dehydrated.

Post-race recovery

You just crushed your glycogen stores and created significant muscle damage. The next 30-60 minutes are your recovery window.

• Carbs: 1-1.5g per kg body weight (70-105g for a 70kg athlete)
• Protein: 0.3-0.5g per kg (21-35g)
• Timing: Within 30-60 minutes post-race
• Easy options: Chocolate milk, protein smoothie with banana, Greek yogurt with fruit, recovery shake

Then eat a proper meal within 2 hours: carbs, protein, and some healthy fats. Your body is primed to absorb nutrients, so don't skip this window.

Why Hyrox fueling is its own puzzle

Hyrox sits awkwardly between two nutrition worlds, which is why generic advice misses. It is not a steady marathon, where you sip a predictable 60g of carbs an hour, and it is not a short, anaerobic CrossFit workout you can do fasted. It is roughly an hour of repeated high-intensity surges (runs alternating with sled pushes, wall balls, and the SkiErg) that lean heavily on glycogen the whole way. That means you want to arrive carb-loaded like an endurance athlete, but keep your race-morning meal light and gut-safe like a strength athlete, because you will be running hard within minutes of starting.

Practically, that means a carb-forward day or two beforehand, a familiar low-fiber breakfast 2-3 hours out, and a small carb top-up shortly before the start. Mapping those targets to your start time is the kind of thing Mavr can automate, but the framing above (endurance-style loading, strength-style race-morning caution) is the real key to fueling Hyrox well.

For the fueling errors that cost Hyrox athletes the most time, see the 7 Hyrox nutrition mistakes. If you also run or ride, the Hyrox vs cycling vs running guide shows how the same basics shift by sport.

Frequently asked questions (FAQ)

Related reading

1. 1American College of Sports Medicine Joint Position Statement: Nutrition and Athletic PerformanceMedicine and Science in Sports and Exercise (Thomas et al., 2016)Daily carbs of 3 to 5, 5 to 7, and 6 to 10 g/kg by training load; pre-event meals of 1 to 4 g/kg 1 to 4 hours before
2. 2International Society of Sports Nutrition Position Stand: Protein and ExerciseJournal of the International Society of Sports Nutrition (Jäger et al., 2017)1.4 to 2.0 g protein per kg a day for most exercising people, in doses of about 0.25 g/kg every 3 to 4 hours
3. 3Carbohydrates for Training and CompetitionJournal of Sports Sciences (Burke et al., 2011)Carb loading for events over 90 minutes; small amounts of carbohydrate help in high-intensity events of about 45 to 75 minutes
4. 4Hyrox Rulebook Singles, Season 26/27HyroxSection 10.5: water on each pass through the Roxzone; racers carry their own nutrition