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Informed Sport tested

Training Bundle · Informed Sport certified

Paquete de entrenamiento

4.8 · 240 gel reviews

Twenty gels and twenty electrolyte sachets: about 10 long sessions.

Informed Sport certified

Alistair BrownleeBen MillarMalachi CashmoreJoanna Tallmann

Developed with Olympians. Trusted daily by athletes worldwide.

1 · Electrolitos (Sabor): menta

£79.95£84.90

60-day guarantee, opened or not. See Delivery and returns

Made in the UKInformed Sport certified

20 gels · 20 electrolytes

4.8 240 gel reviews
“The mint has a great flavour, nice and subtle. Easy to drink… great flavour, nice and subtle …”
Luke T. · Electrolytes · review via Judge.me
“Amazing taste, have been using for 8 months …”
John S. · review via Judge.me
“Love them, the taste is great and are very easy on my stomach. …… very easy on my stomach …”
Bryan D. · Energy Gels · review via Judge.me
Racing soon? The Race Ready System adds CoreCtrl for hot race days.
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Batch tested

Our philosophy

Own your physiology. We develop what it takes for you to do just that.

Same philosophy, every product: based on the latest science, test it in the real world, stripped of anything that isn’t needed to perform again tomorrow.

Used by elite athletes around the world.

How to use

What 20 + 20 covers, per long session.

Before1 Electrolytes sachet in 500ml
During2 gels an hour (80g carbs), by the table on the box
After1 Electrolytes sachet
10 sessions20 gels + 20 sachets

For a plan built on your race, your sweat and the weather, use Your plan on this page. For a personal recommendation, email support@truefuels.com.

What it does

20 Energy Gels in the Mix Box, Low Salt and High Salt: carbohydrate that keeps session quality up.

20 Electrolytes, Mint or Watermelon: sodium and minerals replaced as you sweat.

A full training block, in one order.

Delivery and returns

Delivery to the UK: 1 to 3 working days, free over £40, otherwise the fee shows at checkout.

The 60-day guarantee covers opened products. If it isn’t right, email support@truefuels.com within 60 days of purchase for a full refund.

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.

Paquete de entrenamiento · from £79.95

01 / The problem

Training Bundle · 20 + 20
  1. Running out the week before the long one.

    A build is twelve weeks of long sessions.

  2. Don’t find the box empty on a Saturday.

  3. 20 gels, 20 sachets, ten long sessions.

    2 gels in the pocket, 1 sachet before and 1 after, per long session.

“Great to have fuel and hydration at the same time!”
Guillaume, review via Judge.me

02 / In the box

Fuel the work that builds the race.

  • 20gels

    Energy Gels, Mix Box

    Low Salt and High Salt in one box, to try both on the long sessions.

  • 20sachets

    Electrolytes

    Mint or Watermelon. Sodium and minerals replaced as you sweat.

  • 1box

    One box

    A full training block, in one order.

03 / The timeline

What 20 + 20 covers.

  1. Before Electrolytes1 Electrolytes sachet in 500ml.
  2. During Energy Gels2 gels an hour (80g carbs), by the table on the box.The salt is already in the gel.
  3. After Electrolytes1 Electrolytes sachet. Ten sessions: 20 gels + 20 sachets.

04 / Proof

What athletes told us.

4.8

240 gel reviews

96%
rated the gels 4 or 5 stars

Gel reviews: 228 of 238 rated 4 or 5 stars · Developed with Alistair Brownlee

Reviews · Paquete de entrenamiento

4.8 ★ · 240 gel reviews

    Alistair Brownlee
    Alistair Brownlee

    Alistair’s perspective

    “I realised it was something I had to manage every day.”
    1. Electrolytes

    Alistair Brownlee · Two-time Olympic triathlon champion · Co-founder

    05 / Complete the system

    Works best as a system.

    The Fourth Discipline™

    The system is ours. The destination is yours.

    06 / Formula

    What's inside. Nothing it doesn't need.

    Read the full science

    These products don’t stop evolving once they ship. We keep testing and refining them with sports scientists and our own athletes.

    See our process

    carbohydrate Primary fuel for long efforts

    sodium 390mg sodium per sachet, from Himalayan salt.

    Per gel, per sachet.

    07 / Your plan

    Get your personalised fuelling plan.

    Your Details
    Weight kg
    Bottle size ml
    GI Tolerance
    Sweat Saltiness
    Training Volume
    Hours per week h/week
    Select Your Race
    Sweat Rate L/h
    Sweat Sodium mmol/L

    If you have tested your sweat rate or sodium concentration, entering these will sharpen the fluid and electrolyte recommendations. Leave blank to use the algorithm's estimates.

    Algorithm informed by published research on exercise fluid replacement, sweat rate, sweat sodium concentration and carbohydrate use during endurance exercise, including Sawka et al. (2007), Jeukendrup (2011) and Baker (2017). Constants: 40 g carbohydrate per gel, 1 g salt per high-salt gel, 0.25 g salt per low-salt gel and 1 g salt per electrolyte serving. Scientific estimate only. Individual variation exists. Validate all recommendations in training before race day.

    08 / Athletes

    Trusted from the podium to the parkrun.

    Tap a face to read their story.

    • Alistair Brownlee Alistair Brownlee

      “The best strategy is usually the simplest one.”

      Alistair Brownlee · Co-founder

    • Ben Millar Ben Millar

      “I’m also a massive fan of the watermelon electrolytes. They’re my daily go-to.”

      Ben Millar · Reflex-Nopinz

    • Malachi Cashmore Malachi Cashmore

      “A gel I can actually get down means I’m still fuelling when it matters most.”

      Malachi Cashmore · Professional triathlete

    • Joanna Tallmann Joanna Tallmann

      “What I like about truefuels is the understated flavour. It’s not a taste you get tired of quickly.”

      Joanna Tallmann · Ultrarunner

    09 / Questions

    Questions? Answered.

    Visit the help centre
    Which gel do I use?

    Low Salt for normal sweat. Salt marks on your clothes or extreme heat? Replace Low Salt with High Salt. Mix the two to set your hour. The bundle’s Mix Box holds both.

    Is it sweet?

    Gels are mild; Electrolytes have zero sugar.

    Do I need both?

    Gels carry 98mg or 386mg sodium; the sachets cover before, after and the bottle.

    Delivery?

    Delivery to the UK: 1 to 3 working days, free over £40, otherwise the fee shows at checkout.

    What’s in the box?

    20 Energy Gels in the Mix Box, Low Salt and High Salt, and 20 Electrolytes in Mint or Watermelon, your choice.

    How do I mix Electrolytes?

    One sachet in 500ml of cold water, before and during training, and a second serve on hot or long days. The gels already carry salt.

    Is it tested for banned substances?

    Yes. Every batch is Informed Sport certified before it ships.

    What if it isn’t right for me?

    You have 60 days to decide. If it isn’t right, email support@truefuels.com for a full refund.

    truefuels® · The Fourth Discipline™

    “Race day should just be an extension of the habits you built in training.”

    Alistair Brownlee, two-time Olympic triathlon champion

    Racing soon? The Race Ready System adds CoreCtrl.