Ordinary people doing extraordinary things
Performance nutrition built for those who show up consistently. Clean fuel your body already knows how to absorb. Nothing it doesn’t need.
As seen in / Partnered with
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40g Carbs per gel
A 1:1 glucose to fructose ratio, with electrolytes built into every gel.
From £29.95
Flexible Plan from £20.97 · save 30%
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1g Salt per stick
Zero sugar. Mint or watermelon.
From £24.95
Flexible Plan from £17.47 · save 30%
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03 / Athletes
Used where the margins are smallest.
Used by elite athletes around the world.
Triathlon / Co-founderAlistair BrownleeTwo-time Olympic triathlon champion and co-founder of truefuels®.
Reflex-NopinzBen MillarOne of the UK's leading hill climbers, with 34 hill climb wins and a national-level road race and stage win.
Triathlon / ProfessionalMalachi CashmoreBritish professional triathlete racing middle distance, seventh at Ironman Pro Series Swansea this year.
Ultrarunning / Zugspitz Ultratrail winnerJoanna TallmannZugspitz Ultratrail winner in 2025 and 2026, and first woman at Kaçkar by UTMB in September.
04 / Bundle
Save 5%The Training Bundle
Twenty gels, twenty electrolyte sachets, and the confidence of not running out mid-build.
£79.95£84.90
What’s inside
20 Energy Gels and 20 Electrolyte sticks.
How to use it
Before: Mix 1 electrolyte sachet in 500 ml water and drink 15 to 30 minutes before your session.
During: Take 1 gel every 30 to 45 minutes for sessions over 60 minutes. Chase with plain water, not electrolytes. Target 60 to 90 g of carbohydrates per hour for sessions over 90 minutes.
After: 1 electrolyte sachet in 500 ml water to restore mineral losses and support recovery. Adjust electrolyte intake based on sweat rate, session length, and conditions.
Delivery and returns
Orders ship within 24 hours. UK delivery takes up to 2 to 3 days, with a flat shipping fee shown at checkout.
You can cancel an order within 14 days, then return unopened products in their original condition within a further 14 days. We refund in full within 14 days of receiving them. Return postage is yours unless the item is faulty.
Faulty or damaged? Email support@truefuels.com with your order number and a photo. Full details in our returns and refunds policy.
05 / Thermal preparation
NewHeat is a variable. Prepare for it.
CoreCtrl is an eight-day protocol of 4,000mg L-Taurine and four electrolytes, taken in the build-up to hot-weather training and racing. Right now it is in a Leeds Beckett University study, and we work with elite cycling teams, Premier League teams and professional tennis players.
- 8Days
- Before heat exposure
- 4,000mg
- L-Taurine per sachet
- 4
- Electrolytes
Trialled through the Australian Open Startups partnership
06 / From the field
4.8
“Love the 40g of carbs per gel vs 30. It makes it easier to dial in the required amount for longer races. Same for the high salt content, especially in summer training.”
08 / Our process
Nothing reaches the shelf without clearing three stages.
Lab, elite athletes, then the partner trial. Every truefuels® formula earns its place before it earns your money.
How We Test
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01
Lab testing
Developed by Alistair, who has used 10,000 gels.
Every product starts in the lab with Alistair and a team of sports scientists, long before anyone else sees it.
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02
Athlete testing
Tested by 50 to 100 elite athletes in real conditions.
They report back on real training volume and real race days.
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03
Partner trial
Then tested where the margins are smallest.
World-class athletes through Australian Open Startups, plus over 20 Brownlee Fitness coaches.
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04
Product launch
Only then does it reach the open market.
No shortcut version. Every product on sale has cleared all three stages.
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05
New studies
The range grows through research, not guesswork.
New studies with Arla and Leeds University shape what comes next.
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06
Continued improvement
What is on the shelf keeps being refined.
Testing continues long after launch. Today’s version is not the last word.
Stages 01 to 03 are the gate. Nothing ships until all three are cleared.
How We Test09 / The Fourth Discipline
Swim.Bike.Run.Fuel.
The discipline nobody sees on the start list, and the one that decides the finish. Train it like the other three.
Enter the Fourth Discipline-
Science / 8 min
Before the Start LineRace day is the part of triathlon we see. The swim. The bike. The run. The finish line. But what we don't see is everything that happens before the starting gun. The...Read article
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Science / 6 min
The Body Learns: Adapting to Heat.After experiencing how much heat could affect my performance in Athens, I arrived at my first sprint-distance triathlon in Cambrils with a very different mindset. It was June, temperatures were high, and...Read article
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Race report / 3 min
From London Cool to Athens Heat: My Poseidon Half Marathon ExperienceMy first half marathon in the heat didn’t go exactly to plan, but it worked. I finished the Poseidon Half Marathon in Athens in 1:57.Read article
