Cyclist mixing a drink bottle on a wet road at dawn

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Find your fuel.
Make it yours.

Discover, personalise and make endurance fuel that fits your training, your preferences and your budget.

Build My FuelExplore formulas

Fuel without the guesswork.

Know what you need. Find your way to fuel it.

1

Your fuelling target

60–90g /hr

3h endurance ride

Calculate your target

Tell us the session. Get carbs, fluid and sodium per hour in seconds.

2

Homemade 90g Drink

DIY

£0.48

Drink + gel

Mixed

£1.85

Find formulas that fit

Homemade, commercial or mixed — every option matched to your target.

3

Lemon Drizzle

#0001

Batch × 4 · 120g carbs

Make it yours

Swap ingredients, change flavour, scale the batch. The numbers update.

4

Saturday long run

80% fuel planned

Add to your activity

Plan exactly what you'll carry, and when, for your next session.

Step 01

Know what you need

Use the Fuel Calculator to work out the carbohydrate requirement for your session and understand the target you are trying to hit.

  • Carb target for your session
  • Practical fluid and sodium guidance
  • Free to use
Try the Fuel Calculator

Step 02

Find your way to fuel it

Compare different ways to reach the same target, from homemade formulas and everyday foods to commercial products and combinations.

  • Homemade, mixed or commercial
  • Compare carbs, sodium and cost
  • Find formulas that fit your target
Explore formulas

Step 03

Make it yours

Formu is being built so formulas can be adjusted, scaled, saved and organised around how you actually train.

  • Adjust and scale formulas
  • Build your ingredient pantry
  • Save and remix what works
Become a Founding Athlete

There's more than one way to fuel.

Open any formula to see how it works. Remix to adapt it to your session, target or preferences.

Runner on a kerb scrolling a phone after a run

Coming with Formu

See it. Save it.
Make it yours.

Found a fuelling idea on Instagram, TikTok or the web? Formu will turn it into a structured formula you can understand, adapt and save.

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Salted maple gel

#0007

Maple syrup

Natural sugars

40ml

Sea salt

Sodium

0.4g

Water

Consistency

10ml

25g carbs · 150mg sodium · £0.40

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Same target. Different ways to fuel it.

Compare the approximate cost of reaching the same carbohydrate target.

Commercial strategy

Gels + sports drink

£5.20/hr

Mixed strategy

Homemade drink + one gel

£1.85/hr

Homemade strategy

Your own 90g drink

£0.48/hr

Example based on approximately 90g carbohydrate per hour. Costs vary by product and ingredients.

Questions athletes ask.

Race day, worked out.

Practical fuelling guides built around the demands of the event you’re training for.

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Runner on a wet street between red-brick mills

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Triathlete cycling a coastal road above a harbour

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Ironman Wales 2027

Built for how athletes actually fuel.

Long-run fuelling

Carbs and sodium for 2h+ on foot

90g/hr cycling

Hitting high targets on the bike

Race-day breakfast

What to eat before the start

Homemade hydration

Electrolytes for a fraction of the cost

Commercial + homemade

Mixing products with your own formulas

Your fuel.
Your formula.

Formu is opening soon. Get Founding Access, use it early and help shape what we build next.

Become a Founding AthleteTry the Fuel Calculator