The best fuel format is the one you can carry, stomach and take on reliably at race pace. Most athletes do best with a mix: drinks for fluid and electrolytes, gels or chews for concentrated carbs, and real food for longer, slower efforts.

How the options compare

Format

Best for

Pros

Cons

Sports drinks

All long efforts, hot days

Fluid, carbs and sodium in one

Bulky to carry; carb dose tied to how much you drink

Gels

Running, high intensity

Compact, fast-acting, easy to dose

Can be sickly; need water alongside

Chews

Cycling, steady efforts

Easy to portion, pleasant texture

Need chewing, harder at high intensity

Bars

Cycling, ultras

Satisfying, some protein and fat

Slower to digest, hard to eat when breathing hard

Real food

Ultras, long rides

Variety, fights flavour fatigue

Less predictable carb content, slower digestion

Matching fuel to your sport

  • Running: gels and drinks are usually easiest, since chewing and digesting solids while running is tough.
  • Cycling: you can handle more solids, so bars, chews and real food work well, especially early in long rides.
  • Triathlon: front-load solids and drinks on the bike, then switch to gels and fluids for the run.
  • Ultras: variety matters. Mix sweet and savoury options to avoid flavour fatigue over many hours.

Intensity changes everything

The harder you work, the less blood reaches your gut and the more simple your fuel needs to be. At high intensity, liquids and gels are your friends. At lower intensity, you can tolerate more solid food.

Don't forget fluid and sodium

Gels and chews provide carbs but often little sodium, and they need water to digest well. If you rely on them, make sure your fluid contains electrolytes to cover your sweat losses.

Build a fuel plan

  1. Decide your hourly carb, fluid and sodium targets.
  2. Choose formats that suit your sport and intensity.
  3. Calculate how many of each you need and where you'll carry or collect them.
  4. Practise the whole plan in training.

The takeaway

There's no perfect product, only the right combination for you. Endura Fuel range lets you mix drinks and gels/chews to hit your targets in the format that suits your event.

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