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 ·
4.86★ (200+ reviews)
60–90% 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 60–75 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 30–40g carbs/hr in training, build 10–15g per week, arrive at race day absorbing 80–90g/hr.
Shop NowCramps
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.
Shop NowHeat
Indoor venues are hot. Crowd, effort, and a closed environment mean core temperature climbs faster than any outdoor race. Heat is a performance variable before you've hit station 3.
CoreCtrl
4,000mg of L-Taurine per sachet — taken daily for 8 days before your event to help your body handle heat under load. Stay in control when the conditions turn against you.
Shop NowYour 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
400mg sodium · 150mg potassium · 25mg magnesium
CoreCtrl™
Indoor heat management · station-by-station cramp prevention
"High-intensity endurance is a different beast — your fuel has to match the intensity, not just the duration."
— Alistair Brownlee, 2x Olympic Champion, truefuels co-founder
Alistair built truefuels because no existing product met the demands of elite triathlon — heat, duration, GI stress all at once. Tested by Alistair and 50+ elite athletes.
Real fuel. Real sessions.
★★★★★ 4.86 from 200+ verified athletes
Really like these. First gel I’m confident using in the middle of Hyrox style sessions. Seems to absorb quickly and without upsetting my stomach so good all round
Best tasting gel I've had, and goes down extremely well during my long runs / Hyrox training.
I tasted watermelon this morning before I left for the gym and thought it was nice! They stack up well compared to other well known brands I’ve tried. Excited to try mint! I haven’t seen that flavour much!
Great taste. They work well for my son on his long rides and double training sessions. No cramping and a solid recovery.👍🏻
Get a free Hyrox race-day fuel plan — singles or doubles
Personalised gel and electrolyte plan based on your race distance, conditions and target time.
Your fuel plan is on its way.
Check your inbox — usually arrives within a few minutes.
No spam. One email with your plan. Unsubscribe anytime.
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 + 1–2 gels during race between stations.
High sodium, potassium and taurine. 400mg sodium + 150mg potassium per sachet.
Carb-rich meal 3h before. Gel 20 min before start. Electrolyte sachet with water 30 min before.
Yes — covers a full 8–12 week Hyrox training block.
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