Written by Will Duru, BSc (Hons) Sport and Exercise Science, award-winning Personal Trainer with over 10 years of experience in strength training and optimising recovery .
Hyrox training for a strength athlete means keeping the strength you have built while developing the aerobic fitness to run 8 km between eight workout stations. Most lifters need more running, more work under fatigue and more carbohydrate, not less lifting. This guide shows you how to make that shift step by step.
If you’ve spent years on a classic muscle-building program, the change can feel strange. Your training probably revolves around heavy compound lifts, progressive overload and long rests between sets. Progressive overload means gradually asking more of your muscles over time, for example by adding weight or reps.
That base is a real asset in Hyrox, the fitness race that combines running with functional exercises. But a race that lasts well over an hour asks for things a strength program doesn’t train. You need endurance, the ability to keep moving while tired, and a plan for pacing.
The photos in this article show King, a strength athlete who moved from muscle-building training into Hyrox. The guidance below is general and applies to any lifter making the same move. For the broader picture of combining strength and endurance, see our guide to hybrid athlete training.
Understanding the Hyrox Challenge: More Than Just Strength
Many lifters approach Hyrox with the confidence of someone who can deadlift twice their body weight. That confidence often fades during the first full practice run. Hyrox is a different kind of test.
A Hyrox race is 8 runs of 1 km, each followed by one workout station (HYROX). The stations, in order, are:
- SkiErg: 1,000 m
- Sled push: 50 m
- Sled pull: 50 m
- Burpee broad jumps: 80 m
- Rowing: 1,000 m
- Farmer’s carry: 200 m
- Sandbag lunges: 100 m
- Wall balls: 100 reps
The weights depend on your division. Pro divisions use heavier loads than Open (HYROX Rulebook, 2026).
| Station | Women Open | Men Open | Women Pro | Men Pro |
|---|---|---|---|---|
| Sled push (incl. sled) | 102 kg | 152 kg | 152 kg | 202 kg |
| Sled pull (incl. sled) | 78 kg | 103 kg | 103 kg | 153 kg |
| Farmer’s carry | 2 x 16 kg | 2 x 24 kg | 2 x 24 kg | 2 x 32 kg |
| Sandbag lunges | 10 kg | 20 kg | 20 kg | 30 kg |
| Wall balls | 4 kg | 6 kg | 6 kg | 9 kg |
For a trained lifter, most of these loads are moderate. What makes Hyrox hard is the fatigue that builds from one station to the next. In a strength session, rest periods let you recover between sets. In Hyrox, you go straight from a run into a station and back out again.
In a 2025 study of 11 recreational athletes, the median time for a simulated race was 86.5 minutes. About 51 minutes of that was spent running (Brandt et al., 2025). Heart rate stayed in the “hard” or “very hard” range for almost the whole race.
Many lifters find this out in their first Hyrox-style workout. A light sled push feels heavy after 2 km of running. A farmer’s carry they’ve done hundreds of times feels much harder with a raised heart rate and tired legs.
The mental side changes too. Strength training rewards a few seconds of maximum effort followed by full recovery. Hyrox asks you to stay focused for over an hour and to make pacing decisions while you are uncomfortable.
Most of all, Hyrox needs a well-trained aerobic system. In the study above, a higher VO2max and more weekly endurance training were linked to faster finish times. Grip strength and muscle mass were not. VO2max is the most oxygen your body can use during hard exercise.
The Science Behind Training Adaptation: Energy Systems Explained
Your body makes energy for movement in three main ways, called energy systems. They don’t switch on one after another. All three contribute during almost all exercise, and the mix changes with how hard and how long you work (Gastin, 2001). Understanding the mix helps you see what a lifter needs to add for Hyrox.
Aerobic System: The Foundation for Hyrox
The aerobic system uses oxygen to produce energy. It becomes the main supplier in efforts longer than a minute or two, and it powers most of a Hyrox race.
For lifters whose sets last seconds rather than minutes, building this system is usually the biggest job. A low aerobic base shows up as a heart rate that spikes on moderate runs and slow recovery between stations. Each station then feels harder than the last.
Building the aerobic system takes steady, patient work. Add longer runs at a conversational pace, where you could still talk in full sentences. Many people call this Zone 2 cardio. A common mistake is running these sessions too fast, which leaves you tired without building the base you need.
Anaerobic System: Power When It Matters
The anaerobic (glycolytic) system breaks down carbohydrate without needing oxygen first. It supplies much of the energy for hard efforts lasting from several seconds to a couple of minutes. In Hyrox, it is heavily used on the sleds, burpee broad jumps and wall balls.
Moderate-rep compound lifting trains parts of this system. Hyrox asks for something different: high effort while you are already tired from the stations before.
High-intensity intervals with incomplete recovery are a common way to train this. Instead of resting fully between efforts, you start the next one before you have recovered. This teaches you to keep producing power while tired.
The mental side matters here too. Learning to stay focused and keep good form during hard efforts is a skill you build in training.
ATP-PC System: Explosive Power for Functional Exercises
The ATP-PC (adenosine triphosphate-phosphocreatine) system supplies immediate energy for explosive efforts lasting up to about 10 seconds. Heavy lifting trains this system well.
A strong ATP-PC system helps with the explosive parts of Hyrox, such as getting a heavy sled moving or driving each wall ball. The challenge is producing that power again and again while you are tired from running.
So for Hyrox, the focus shifts from maximum power to repeated power. Practice explosive movements with shorter rests and after other exercises have tired you. Jumping exercises, called plyometrics, fit well here.
Strength Endurance: The Bridge Between Worlds
Strength endurance is the ability to keep producing force over and over without a big drop in performance. It sits between pure strength and pure endurance, and it is one of the most important qualities to build for Hyrox.
Most muscle-building programs develop maximum strength but not much strength endurance. Doing 100 wall balls with good form after seven other stations is a very different task from heavy squats with full rest between sets.
To train it, use moderate loads for higher reps, shorter rests and longer continuous efforts, such as carries for distance. You can build strength endurance and keep your maximal strength at the same time. A 2022 meta-analysis found that adding endurance training did not hold back muscle growth or maximal strength (Schumann et al., 2022).
The real skill is putting these systems together. Successful Hyrox preparation teaches you to move between running, explosive station work and steady effort without your performance falling apart.
How Your Training Changes: From Muscle Building to Hybrid Athlete
For a lifter, changing a program that has worked for years is one of the hardest parts of Hyrox preparation. The aim is to keep the muscle and strength you have built while developing new abilities. That takes planning and regular adjustment.
A Typical Strength and Muscle-Building Program
Many lifters follow a classic body-part split. Each muscle group gets its own day: chest and triceps, back and biceps, shoulders, and legs. Sessions last 60 to 90 minutes and focus on progressive overload.
Heavy compound lifts such as the squat, deadlift and bench press often come first, in the 3 to 6 rep range. Accessory work follows in the 8 to 12 rep range for muscle growth.
Rest periods are long, often 3 to 5 minutes between heavy sets and 2 to 3 minutes between accessory sets. That helps you lift heavy on every set, but it does little for conditioning. For more on this, see our guide to how long to rest between sets.
Cardio often plays a small role, maybe a 10-minute warm-up on the treadmill or bike. Many strength athletes avoid more because they worry it will hurt their gains. That approach works for building muscle, but it leaves gaps that show up fast in Hyrox.
The Transition Phase: Adding Functional Elements
Start by adding Hyrox elements to your existing strength program rather than replacing it. Keep your strength base and bring in new movements and energy demands step by step. Plan on about eight weeks for this phase, and check that your strength is holding up along the way.
Running. This is usually the biggest change. A simple start is two runs per week of 20 to 30 minutes at a conversational pace. Place them on days without lower-body lifting, or leave a few hours between a run and a leg session. Your legs may feel awkward on long runs at first. Running technique often needs attention, and it improves with regular practice.
Farmer’s carries. These are a natural first station to add because they feel close to gym lifting. They train grip, core and posture under load, and they raise your heart rate. Add them at the end of upper-body sessions, then build the distance and weight. See our guide on how to do a farmer’s carry.
Sled push and pull. Add sled pushes and rope sled pulls to train the same muscles in new patterns. The sled push often surprises lifters because the effort is long and continuous. Learning to pace the sled while keeping a strong body position is a key skill for race day.
Burpees. For many lifters, burpees are the hardest addition, physically and mentally. Start with a modified version, such as stepping back instead of jumping, then build to full burpees. The burpee broad jumps in Hyrox add an explosive jump, which suits a strength background better.
Bike intervals. An air bike (also called an assault bike) is a useful tool for hard intervals. Use short, intense efforts with incomplete recovery. This trains you to work hard while carrying fatigue, which is what each Hyrox station asks of you.
Nutritional Adaptations: Fueling the Hybrid Engine
A diet built for muscle gain usually needs changes for Hyrox training. You’re now asking your body to do two things: keep your muscle and build the endurance to run 8 km between stations. Your total energy needs go up, and carbohydrate becomes more important.
The advice below is general. If you have a medical condition or take medication, check with your doctor or a registered dietitian before you make big changes.
Protein: Keeping Your Muscle
Many lifters worry that more cardio will cost them muscle. Steady protein intake helps protect it. A joint position paper from sports nutrition and sports medicine groups recommends 1.2 to 2.0 g of protein per kg of body weight per day for athletes. Higher intakes may help for short periods of hard training or when eating less (Dietitians of Canada, Academy of Nutrition and Dietetics and ACSM, 2016).
The same paper suggests about 0.3 g per kg of body weight after key sessions and every 3 to 5 hours across the day. Simple sources such as chicken, fish, eggs, dairy and a protein powder for convenience are enough. Consistency matters more than complicated timing. For more detail, read how much protein you need to build muscle.
Carbohydrate Increase: More Fuel for More Work
This is often the biggest change for lifters who have kept carbohydrate low. Short, intense strength sessions don’t use as much fuel as long hybrid sessions. Once you train for 60 to 90 minutes at a time, you need more.
The same position paper gives daily targets based on training load:
| Training load | Carbohydrate per kg of body weight per day |
|---|---|
| Moderate (about 1 hour a day) | 5 to 7 g |
| High (1 to 3 hours a day of moderate to high intensity) | 6 to 10 g |
Moving up from a low-carb approach can feel like a lot at first. Many people find their energy in long sessions and their recovery between training days improve once they eat enough.
Timing helps. Eat a carbohydrate-rich meal a couple of hours before longer sessions, and refuel afterward. Rice, oats and potatoes work well as main sources, and a banana or a few dates are easy after a hard session.
Micronutrients: The Small Things That Add Up
Vitamins and minerals support energy production and recovery. A varied diet with plenty of colorful vegetables and fruit covers most needs.
Nitrate-rich vegetables. Beetroot and leafy greens such as spinach are rich in dietary nitrate. A meta-analysis found that nitrate supplements improved endurance capacity in time-to-exhaustion tests. They were less likely to improve time-trial performance (McMahon et al., 2017). Beetroot juice before harder sessions is a common way to try this.
Iron and vitamin C. Iron helps carry oxygen in your blood. Distance runners and vegetarian athletes are among those at higher risk of low iron. The position paper recommends getting iron from food first and pairing plant sources of iron with vitamin C, such as citrus fruit. It does not recommend iron supplements without testing and medical advice (2016 position paper).
You don’t need to count micronutrients or take a stack of supplements. Eat leafy greens and beetroot regularly, add a range of other vegetables, and keep it simple enough to fit your meal prep.
The Role of the 12REPS App: Structured Progression
If you’re new to structured training, or not sure how to progress from week to week, a clear plan makes a big difference. That is especially true when you are adding running and stations to your strength work.
The 12REPS app builds your strength sessions around your goal, your equipment and the time you have. It remembers what you lifted last time, so you always have a number to beat. That helps you keep your strength while your running volume goes up.
A structured plan also takes emotion out of training decisions. When you’re tired and everything feels hard, it’s tempting to skip sessions or go too easy. With a plan, you just do the next session.
Some Hyrox movements will be new, even for experienced lifters. 12REPS shows a trainer demonstration and technique breakdown for every exercise, so you can learn the movement properly rather than muscling through with poor form.
Conclusion: Your Journey from Strength to Hybrid Fitness
Moving from pure strength training to Hyrox is a challenge, and it won’t always be smooth. Some sessions will feel humbling, and your old training will feel easier. The progress that comes from stepping outside your comfort zone is worth it.
You don’t have to choose between being strong and being fit. With the right approach, you can keep the muscle and strength you’ve built while you develop new abilities. It takes patience, smart programming and a willingness to be a beginner at some things for a while.
If you’re a strength athlete thinking about Hyrox, start small and be consistent:
- Add easy running and a few functional movements to your current program.
- Build your aerobic base before you add lots of high-intensity work.
- Develop strength endurance with carries, sleds and higher-rep sets.
- Eat enough carbohydrate and protein to support the extra work.
- Give your body time to adapt. Think in months, not weeks.
For more on preparing for race day, read why strength training matters for Hyrox and whether you should take creatine for Hyrox. If you come from running rather than lifting, see from runner to hybrid athlete.
When you’re ready, 12REPS can set out your strength sessions for each week, with a trainer demonstration for every exercise and a log of every set you lift.
This article gives general guidance on moving from strength training to hybrid fitness. Individual results vary. If you have a health condition or an injury, speak to a qualified professional before making big changes to your training.
Sources
- The Fitness Race. HYROX, accessed 2026. https://hyrox.com/the-fitness-race/
- HYROX Rulebook Singles, Season 26/27. HYROX, 2026. https://maintain.hyrox.com/rulebooks/HYROX_RulebookSingles_EN.pdf
- Acute physiological responses and performance determinants in Hyrox: a new running-focused high intensity functional fitness trend. Frontiers in Physiology, 2025. https://frontiersin.org/journals/physiology/articles/10.3389/fphys.2025.1519240/full
- Energy system interaction and relative contribution during maximal exercise. Sports Medicine, 2001. https://rd.springer.com/article/10.2165/00007256-200131100-00003
- Compatibility of Concurrent Aerobic and Strength Training for Skeletal Muscle Size and Function: An Updated Systematic Review and Meta-Analysis. Sports Medicine, 2022. https://pmc.ncbi.nlm.nih.gov/articles/PMC8891239/
- Nutrition and Athletic Performance: Position Paper of Dietitians of Canada, the Academy of Nutrition and Dietetics and the American College of Sports Medicine. Dietitians of Canada, 2016. https://www.dietitians.ca/DietitiansOfCanada/media/Documents/Resources/noap-position-paper.pdf?ext=.pdf
- The Effect of Dietary Nitrate Supplementation on Endurance Exercise Performance in Healthy Adults: A Systematic Review and Meta-Analysis. Sports Medicine, 2017. https://dx.doi.org/10.1007/s40279-016-0617-7
