If you are wondering how to prepare for a HYROX race, start with fuel. HYROX is not just a run, and it is not just a strength workout. It asks your body to run, push, pull, carry, lunge, row, ski, and finish under fatigue. That means your nutrition plan should help you train hard, recover well, and show up on race day with enough energy in the tank.

As a HYROX sponsor, MyFitnessPal is here to help athletes think about race prep beyond the workouts, including the nutrition habits that support training, recovery, and race day. This guide includes advice from Joanna Gregg, RD, a MyFitnessPal Registered Dietitian who has completed a HYROX race herself — so the recommendations below come from both her background in nutrition science and real race training experience.

What Is HYROX — and Why Does Nutrition Matter?

HYROX is a fitness race: participants run 1 kilometer, complete one functional workout station, and repeat that pattern eight times, alternating eight runs with eight functional workout stations. The stations include SkiErg, sled push, sled pull, burpee broad jumps, rowing, farmer’s carry, sandbag lunges, and wall balls. (1)

That combination of running and strength work is exactly why nutrition matters here: a HYROX athlete needs enough carbohydrate to support repeated running and high-intensity work, enough protein to support recovery from strength training, and enough total energy to handle the training load. (2,4)

“To perform well in HYROX, you need to prioritize fuel”, Gregg says. “Your body needs enough energy to power workouts and recover afterward. Eating enough to stay out of a calorie deficit helps you train consistently and perform at your best.” 

How Should You Increase Carbs and Protein for HYROX?

The most practical approach is to adjust your carbohydrate and protein intake based on your training. Longer, harder sessions require more fuel than rest or recovery days.

Carbohydrates are your body’s primary fuel source for high-intensity exercise. They replenish muscle glycogen, which is stored carbohydrate your muscles rely on during demanding workouts. Athletes doing moderate amounts of intense training may need around 5 to 8 grams of carbohydrate per kilogram of body weight per day, while very high-volume training can push needs higher. (2)

Protein supports muscle repair, recovery and adaptation. For many active people, a daily target around 1.4 to 2.0 grams per kilogram of body weight is a practical target to support muscle protein synthesis. (4)

The key is not eating the exact same way every day, rather to match your nutrition to your workload. A hard training day with both running and stations  may need more carbs than a rest day. A heavy strength day may need steady protein across meals. Tracking meals in MyFitnessPal can help you notice patterns: how much you eat on hard days, how recovery feels, and whether you are consistently under-fueling without meaning to.

What Macros Do You Need for HYROX?

HYROX combines endurance and strength, so all three macronutrients play an important role in fueling. Carbs provide energy for running and harder efforts while replenishing glycogen post workout. Protein supports muscle repair and recovery, and dietary fat helps support overall energy intake and provide essential fatty acids that support overall health. (2,4)

Here is a simple way to look at it:

These ranges are starting points, not personal prescriptions. Your ideal macro intake will vary based on body size, training volume, overall calorie needs, and goals.  A tool like MyFitnessPal can help you track and modify your intake throughout training to optimize performance. 

How Many Carbs Do You Need for a HYROX Race?

Carbohydrate intake isn’t just important on race day. For HYROX, carbs matter throughout training.  Research suggests that most athletes participating in moderate-to-high volume training benefit from about 5 to 8 grams of carbohydrate per kilogram of body weight per day to fuel performance and promote recovery. (2)

Easier or recovery days may require fewer carbohydrates while harder days, especially days with running intervals, sled work, compromised running, or full race simulations may require intake closer to the higher end of that range.

For example, a 70-kilogram (154 pound) athlete, that works out to about 350 to 560 grams of carbohydrates on a moderate-to-hard training day. That is not a rule. It is a range to test and adjust.

“Carb needs will vary based on the training load,” Gregg says. “High volume, more demanding training days generally require more carbs, while shorter, lighter days may need less. But it is still important to fuel adequately on rest days. Glycogen stores are typically still depleted during bouts of hard training and continuing to fuel properly will help optimize performance during training and prepare your body for race day.”

How Much Protein Should HYROX Athletes Eat?

Protein needs are best calculated based on body weight. Most HYROX athletes should aim for  about 1.4 to 2.0 grams of protein per kilogram of body weight per day, spread across meals  to help maximize muscle protein synthesis while supporting muscle repair and recovery 

According to the International Society of Sports Nutrition (ISSN), this range is enough for most exercising individuals who want to build or maintain muscle. It also notes that protein doses around 20 to 40 grams, or about 0.25 grams per kilogram of body weight, can help stimulate muscle protein synthesis. (4)

For HYROX, that means protein should show up more than once per day. You should aim to include a quality protein source at each meal and snack. Spreading protein intake throughout the day may support muscle recovery and muscle protein synthesis more effectively than consuming most of your protein in a single meal. (4)

The International Society of Sports Nutrition recommends consuming approximately 20 to 25 grams of high-quality protein per meal (or approximately 0.25g/kg/meal), spaced about every 3 to 4 hours, to maximize muscle protein synthesis. (4)

“Protein is especially important during heavier training blocks to support muscle repair and recovery,” says Gregg. “But it shouldn’t come at the expense of carbohydrates. HYROX athletes need enough of both to recover well and perform their best.” 

What Role Do Fats Play in HYROX Performance?

While carbohydrates and protein typically get the spotlight, dietary fat also plays an important role for HYROX athletes. Dietary fat mainly supports total energy intake, provides essential fatty acids, and sports nutrition guidance commonly places it around 25 to 35% of total calories, depending on total energy needs and goals. (2)

The practical takeaway: do not slash fat so low that meals feel unsatisfying or calories become too low. But in the final hours before a race, keep fat familiar and moderate, since high-fat meals can slow digestion and can increase the risk of stomach discomfort during competition. (5)

How Do You Carb Load for a HYROX Race?

There is more to carb loading than eating a giant pasta dinner the night before your race. The more useful approach is to increase carbohydrate intake while reducing training volume in the final 24 to 48 hours before competition. Sports nutrition guidance notes that high-carbohydrate intake paired with a taper can help maximize muscle and liver glycogen stores. (2)

For some athletes, that may mean a full carb-load approach. For others, especially if their expected race time is shorter or their stomach is sensitive, it may mean a smaller carb increase. The goal is to arrive fueled, not bloated or uncomfortable.

Don’t wait until race week to experiment. Use a HYROX simulation day or longer training session  to practice your pre-race fueling. Tracking your intake in MyFitnessPal can help you fine-tune your race-day nutrition by identifying the amount of carbohydrate that keeps you energized for performing at your best. 

What Should You Eat the Day Before a HYROX Race?

The day before a HYROX race should feel familiar: carbohydrate-rich meals, steady hydration, enough protein, and nothing new. Avoid making the day before the race your first test of a new food, supplement, or very high-fiber meal — pre-event nutrition should be individualized and practiced before competition. (5)

“Race week is when complex carbs and hydration become key,” Gregg says. “You want to go into the race fueled, not depleted.”

This is also a good time to pay attention to sodium and fluids, especially if you sweat heavily. Fluid needs vary by athlete, environment, sweat rate, and exercise duration. (6)

What Should You Eat on the Day of your HYROX Race?

For breakfast before a race, think carbs first, then add a moderate amount of protein if you tolerate it well. Sports nutrition guidance commonly recommends a pre-event meal with about 1 to 4 grams of carbohydrate per kilogram of body weight, eaten 1 to 4 hours before exercise to top off glycogen stores and provide readily available energy. (5)

Because HYROX start times can vary widely, from early morning to late evening, your race-day nutrition should be based on when you compete. If you have a late-afternoon or evening start, treat your meals earlier in the day as part of your fueling strategy, eating balanced, carbohydrate-rich meals and timing your final pre-race meal about 1 to 4 hours before your scheduled wave. The closer you are to race time, the simpler the meal should be. 

Choosing foods that are lower in fiber and fat in the final hour or two pre-race is ideal to help reduce risk of gastrointestinal discomfort while still providing adequate carbohydrates to compete.(5)

A small carbohydrate-rich snack or drink 30 to 60 minutes before the start may also help some athletes feel ready, especially if there is a long gap between your last meal and your start time.  (2)

Do You Need Fuel During a HYROX Race?

Maybe. It depends on how long you’ll be competing. HYROX is a high-intensity event, and many athletes will be racing for longer than 45 minutes. As the duration increases, having a fueling and hydration plan becomes more important.

“For high-intensity exercise lasting longer than 45 minutes, I recommend having a fueling plan,” Gregg says. “Most HYROX athletes are working hard long enough that they should think about both carbs and fluids.”

For longer, higher-intensity efforts, sports nutrition guidance often recommends about 30 to 60 grams of carbohydrate per hour to help maintain blood glucose and delay fatigue. (2)

For HYROX, that usually means quick, easy carbs—not a full snack. Think sports drink, energy gels, fruit snacks, or other portable carbohydrate sources you have already tested during training. 

Keep in mind that HYROX has specific rules about race-day fueling. If you plan to consume nutrition during the race, you’ll need to carry it with you from the start. While water is available at aid stations—and some events may also provide a sports drink or other hydration product—athletes are not permitted to accept food, drinks, or energy gels from spectators. Doing so is considered outside assistance and may result in a time penalty. (7)

Plan ahead by carrying gels, chews, or other portable fuel in a pocket, running belt, or waistband, and practice fueling with them during training so there are no surprises on race day.

A simple race-day approach:

Hydration matters too, but there is no one-size-fits-all amount. Fluid needs depend on sweat rate, race environment, body size, and race duration. If you sweat heavily or are racing for longer a drink with sodium may be useful. (6)

The main rule: do not try your race fuel for the first time on race day. Test it during hard workouts or HYROX-style simulations first.

What Should You Eat After a HYROX Race?

After HYROX, your first nutrition goal is recovery: carbohydrate to replenish glycogen, protein to support muscle repair, and fluids to replace what you lost through sweat. While recovery nutrition matters throughout the day, the first 30 minutes to 2 hours after finishing is an ideal window to begin refueling, when your muscles are especially receptive to replenishing glycogen and initiating muscle repair.  (2,4,6)

A practical post-race recovery plan:

• Carbs: Eat a carb-rich meal or snack within the first 30 minutes to 2 hours  to begin restoring glycogen.
• Protein: Aim for 20 to 40 grams of high-quality protein. (4)
• Fluids: Rehydrate by  replacing the fluids you lost through sweat. Water may be sufficient for shorter races, while a sports drink can help replace both fluids and electrolytes after longer or hotter events  (6)

This could be a recovery shake and fruit, a rice bowl with protein, a sandwich with a sports drink, or another easy carb-and-protein option. The exact foods matter less than getting a combination of carbohydrates and protein the work for you. We’ll cover more specific pre- and post-HYROX meal ideas in our next article. The goal is simple: start refueling before you get too busy, too tired, or too nauseous to eat.

Frequently Asked Questions (FAQs)

• What does HYROX stand for?

HYROX is the official name of the fitness racing event. The official race format combines 1-kilometer runs with functional workout stations, repeated eight times. (1)

• Should I try to lose weight while training for HYROX?

HYROX training is not the best time for aggressive calorie restriction. Low energy availability can affect athlete health and performance, so meeting your energy needs should be the priority during race preparation. (3)

• Should I track macros while training for HYROX?

Tracking can be a useful tool for making sure your nutrition supports your training.  It can help you see whether your carbs, protein, and total energy match your training load. Tracking with MyFitnessPal can also help identify patterns in your fueling recovery and performance over time.

• Can I do HYROX fasted?

Some athletes train fasted at times, but race day is different. Because HYROX is a high-intensity event,consuming carbohydrates before the race can help glycogen stores, maintain energy levels, and support performance. (5)

• Do I need supplements for HYROX?

Not necessarily. Most athletes will see the greatest benefit from getting the fundamentals right first: eating enough total calories, consuming adequate carbohydrates and protein, staying hydrated, and replacing electrolytes when needed. If you choose to use supplements, test them during training—not on race day—and consider consulting a qualified sports dietitian or healthcare professional, especially if you have a medical condition or take prescription medications. 

How Can MyFitnessPal Help You Track HYROX Training?

Logging both food and workouts makes it easier to see whether your nutrition is actually keeping up with your training. 

Log meals to see whether you’re eating enough carbohydrates, protein and total calories to support harder training days. Use the barcode scanner to quickly track race-day fueling products like sports drinks, energy gels and chews. 

Pair nutrition tracking with workout logging by syncing a wearable like Garmin, Strava, or Apple Health to see how your fueling aligns with your training volume. so you can catch under-fueling instead of guessing. 

Whether you’re preparing for your first HYROX or chasing a new personal best, MyFitnessPal can help you build fueling habits that support consistent training and race-day performance. 

Bottom Line

HYROX nutrition is about matching your fuel to the work.

That usually means more carbohydrates on hard training days, enough protein to promote muscle repair and recovery, including healthy fats to support total energy, and a well rehearsed race-day fueling strategy. It also means avoiding aggressive calorie restriction during a demanding training schedule, when your body needs energy to adapt and perform.

Start simple: fuel your hardest sessions, practice pre-race meals, plan carbs and fluids for race day, and recover with carbs, protein, and hydration. MyFitnessPal can help you track the pattern so you can see what works before you get to the start line.

The post How To Train for the HYROX Race: Nutrition Edition appeared first on MyFitnessPal Blog.