01 / Performance nutrition

Barcelona · London

Gels · Electrolytes · CoreCtrl

Ordinary people doing extraordinary things

Fuel for the long days that sits easy when the effort doesn’t. 40g carbohydrate gels with the salt already inside, mild enough that gel six goes down like gel one.

Find your gel Get your fuelling plan

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02 / The range

The complete fuelling system.

Shop all

Carbs in the gel, electrolytes in the bottle, CoreCtrl for the hottest races. Start with the gels; build from there.

Energy Gels
40g Carbs per gel
Carbs and salt in one sachet, in two settings matched to your sweat. ★ 4.8 · “Easy on the stomach” is what customers write most.
From £29.95
From £20.97 on the Flexible Plan· Not sure which? Try the Mix Box
Electrolytes
1g Salt per stick
Zero sugar, mild enough to sip all session. Mint or Watermelon. “Refreshing without being overbearing.” (David R., review via Judge.me, edited)
From £24.95
From £17.47 on the Flexible Plan
CoreCtrl
4,000 mg L-Taurine
For hot races. One sachet a day for the eight days before race day.
From £28.95

03 / From the field

“Easy on the stomach.” The sentence our customers write most.

4.8

323 verified reviews

Read all reviews

“I’ve never been able to stomach gels… these have been a game changer for me.”

Mark M.Energy Gels / Marathon / Verified buyer, edited

Reviews via Judge.me. Some are shortened or edited.

Find your gel

04 / Bundle

Save 5%

The Training Bundle

Twenty gels, twenty electrolyte sachets, and the confidence of not running out mid-build.

Enough for about 10 long sessions: 2 gels in the pocket, 1 electrolyte in the bottle.

20 × Electrolytes20 × Energy Gels

£79.95~~£84.90~~ bought separately

Racing soon? The Race Ready System adds CoreCtrl for hot race days.Save 14% vs buying separately

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. The salt is already in the gel. 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

Delivery to the UK: 1 to 3 working days, with the 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 / Athletes

Trusted from the podium to the parkrun.

Raced by Olympians and pros. Reviewed by 322 athletes like you.

Tap a face to read their story.

Alistair Brownlee
“By race day, your legs should be doing the work, not your brain.”
Alistair Brownlee · Co-founder
Triathlon / Co-founder
Two-time Olympic triathlon champion and co-founder of truefuels®.
Ben Millar
“For me, it’s pretty simple: the gels taste great, they’re easy to consume, and I’ve had zero stomach issues with them. 40g of carbs never felt so easy.”
Ben Millar · Reflex-Nopinz
Reflex-Nopinz
One of the UK's leading hill climbers, with 34 hill climb wins and a national-level road race and stage win.
Malachi Cashmore
“A gel I can actually get down means I’m still fuelling when it matters most.”
Malachi Cashmore · Professional triathlete
Triathlon / Professional
British professional triathlete racing middle distance, seventh at Ironman Pro Series Swansea this year.
Joanna Tallmann
“What I like about truefuels is the understated flavour. It’s not a taste you get tired of quickly.”
Joanna Tallmann · Ultrarunner
Ultrarunning / Zugspitz Ultratrail winner
Zugspitz Ultratrail winner in 2025 and 2026, and first woman at Kaçkar by UTMB in September.

06 / Our process

Nothing reaches the shelf without clearing three stages.

Lab, elite athletes, then real races. Every truefuels® formula earns its place before it earns your money.

How We Test

01
Lab testing
Developed by Alistair, who has taken 10,000 gels.
Built in the lab with Alistair and a team of sports scientists, around one question: what still works when you’re exhausted?
02
Athlete testing
Tested by 50+ elite athletes in real conditions.
Real training volume, real heat, real race days.
03
Race trial
Then raced where it counts.
Official nutrition partner of the Castle Race Series, and used by 20+ Brownlee Fitness coaches.
04
Product launch
Only then does it reach you.
No shortcut version. Every product on sale has cleared all three stages.
05
New studies
The range grows through research, not guesswork.
New studies with Arla and the University of Leeds shape what comes next.
06
Continued improvement
And then you test it.
322 athletes have reviewed it so far. The sentence they write most: “easy on the stomach.”

Stages 01 to 03 are the gate. Nothing ships until all three are cleared.

How We Test

07 / Heat protocol

New

Heat is a variable. Prepare for it.

Racing somewhere warm this winter? CoreCtrl is an eight-day protocol you start before you get there: one sachet a day, each with 4,000mg L-taurine and four electrolytes.

8Days: Before heat exposure
4,000mg: L-Taurine per sachet
4: Electrolytes