Eight stations. Sixty minutes of pain.
Your nutrition can't be an afterthought.
The truefuels system is built for what happens after the easy miles run out.
Informed Sport certified ·
Built by Alistair Brownlee ·
4.8★ (300+ reviews)
60 to 90% of endurance athletes underfuel.
The wall, cramp and overheating are fuelling failures. Not fitness failures.
Hitting the Wall
Hyrox sits at near-maximal intensity for 60 to 75 minutes. Glycogen burns faster than any endurance event at this duration. By station 5, athletes are running on empty. And there are still three stations to go.
Energy Gels
40g of fast carbohydrates per gel. Start at 30 to 40g carbs/hr in training, build 10 to 15g per week, arrive at race day absorbing 80 to 90g/hr.
Cramps
Hyrox generates intense, compressed sweat loss. More sodium and potassium depleted per minute than most endurance events. Calf and hamstring cramps in the final three stations aren't bad luck. They're a deficit built up from the first.
Electrolytes
390mg of sodium per sachet. Matched to what your body actually loses in sweat, not inflated. Your hydration stays on track, from station 1 to the finish.
Heat
Hyrox halls get hot: a crowd, hard efforts and a closed room. Heat is a performance variable before you've hit station 3.
CoreCtrl
4,000mg of L-Taurine per sachet. One a day from seven days before your event, the last on race morning.
Your Race Fuelling Calculator
Enter your race details and get a personalised gel and electrolyte plan.
Products & Bundles
Start with a bundle or build your own stack. Bundles save you vs buying separately.
RACE READY SYSTEM
40× Energy Gels + 20× Electrolyte sachets + 8× CoreCtrl sachets + FREE truefuels bottle
TRAINING BUNDLE
20× Energy Gels (mixed low + high salt) + 20× Electrolyte sachets
Gel: Low Salt (0.25g)
40g carbs · 0.25g salt · doubles format · training
Gel: High Salt (1g)
40g carbs · 1g salt · high-intensity sweat · primary choice
Electrolytes
390mg sodium · 150mg potassium · 25mg magnesium
CoreCtrl
4,000mg L-taurine · one a day, seven days out
Frequently Asked Questions
In doubles: yes, use transition time. In singles: pre-race gel 20 min before start is more practical than during.
Singles: carb-load day before + pre-race gel 20 min before + electrolytes 30 min before. Doubles: same + 1 to 2 gels during race between stations.
High sodium, potassium and taurine. 390mg sodium + 150mg potassium per sachet.
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