Fueling for Endurance Swimming: How to Prepare for the Elite Swim at OceanMan

We were asked this week: "How should I fuel for the elite swim at OceanMan?"

It’s a great question - and one that many endurance swimmers underestimate.

At OceanMan, athletes will complete 6 laps of 1.25 km, exiting the water after each lap. This creates a unique fuelling opportunity: swimmers have predictable, controlled access to nutrition at the end of every loop. Getting this right can make a significant difference in both speed and consistency across the race.

Why Fueling Matters in Open-Water Swimming

Unlike cycling or running, swimmers cannot take on nutrition continuously. That means:

- Carbohydrate intake must be strategic and high quality

- Dehydration can become a major issue, especially in the Middle East’s warm sea temperatures

- Electrolytes are essential - even swimmers sweat

Recommended Solution: BiG Endurance

For OceanMan, our recommended fuelling strategy centres on BiG Endurance, available in three flavours: watermelon, pineapple, and peppermint.

Why BiG Endurance Works

- High carbohydrate delivery: 90g of fast-acting carbs per litre

- Ideal for lap-based fuelling: take one mouthful at the end of each lap

- Electrolytes included: 0.91g sodium + calcium, magnesium, zinc, and potassium

Dehydration in Swimming

Even mild dehydration can reduce stroke efficiency and increase perceived exertion. Structured intake at each lap exit is essential.

How to Use BiG Endurance

- Mix to 90g carbs per litre

- Place bottle at lap exit

- Take a single mouthful each lap

Final Tips

- Start well-fuelled

- Follow your routine consistently

- Prepare bottles and check access logistics

By David Hunt certified TriSutto coach