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Nicole Brunt

IRONMAN® World Championships

22nd September, 2024
France
Nice
Top 50, F30-34
Triathlon, Full distance - 226.2km
21°C
, Hot
11hrs 33mins
more race details

Nicole's headline numbers

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?
?
~63
g
Carb per hour
Recommended 90g/h+
~374
ml
Fluid per hour
Recommended 250-750ml/h
~1,358
mg
Sodium per litre
Recommended 1500-1900mg/L
~9.5
mg
Caffeine per kg
Recommended 3-6mg/kg

Nicole's strategy

Fueling

Carbohydrate is the main fuel you burn when racing. Failing to fuel properly is a leading cause of underperformance in longer races.

Carb-rich meal
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T - 1-4hrs: Ate a carb rich meal (Low in fat & fibre)
pre-fueled
?
T - 15mins: Took in a final dose of carb
Carb per hour
Recommended 90g/h+
~63
g
Nicole's Energy Rating
8
/10
"I had a flat patch coming onto the bike, and then felt really tired from 30km to 80km. After a toilet stop at 100km, I felt much better for the rest of the race, even on the last lap of the run. "
Our thoughts

Nicole consumed a decent amount of carbohydrates across eleven and a half hours of racing, with a slightly higher intake on the run compared to the bike (the opposite trend to what we see across our Case Study Database). For future races, we’d advise increasing her intake on the bike to meet the recommended 90g/h, especially as her stomach felt comfortable and she even felt ‘quite hungry’. Increasing her fuel intake on the bike will improve her carbohydrate availability and energy levels to keep her racing harder for longer.

Hydration

Taking on board an appropriate amount of fluid and sodium is essential to maintaining blood volume and supporting the cardiovascular effort needed to perform on race day.

Whilst the absolute amount of sodium and fluid consumed per hour is important, it’s critical to consider these in relation to each other. This is known as 'relative sodium concentration' and it’s expressed in milligrams per litre (mg/L). How much sodium you’re taking in per litre of fluid is more important than the absolute amount taken in per hour.

Nicole1740mg/L
Nicole has been Sweat Tested to dial in her hydration plan

Sweat sodium concentration (mg/L) is largely genetically determined and remains relatively stable. Knowing how salty your sweat is enables you to replace a good proportion of your sweat losses, which can range from 200-2,000mg/L.

Given Nicole’s losses are Very High (1,740mg/L), nailing her hydration strategy becomes especially crucial when it’s hot and/or humid.

Learn more
Pre-loaded electrolytes
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T - 60mins: Drank ~500ml of strong electrolyte drink
Fluid per hour
Recommended 250-750ml/h
~374
ml
Sodium per litre
Recommended 1500-1900mg/L
~1,358
mg
Nicole's Hydration Rating
9
/10
"I was really lucky with the weather so my sweat rate wasn’t super high, and overall I think my hydration went quite well. "
Our thoughts

In her previous race at IRONMAN® Cairns, Nicole likely didn’t drink enough fluid or electrolytes, leading to her suffering quite badly including some severe cramping. This time, she appropriately increased her intake and felt much better for it. Although it was still under her recommended sodium intake (Nicole is a very salty sweater and found out exactly how salty a few days after the race), this was a vast improvement for her and likely replaced a much higher proportion of her losses, especially given the mild conditions. For Nicole’s next race, she should further increase her sodium intake to help her retain more fluid, particularly on the run where her sodium consumption drastically dropped. Practically, she could simply take a few more Electrolyte Capsules to achieve this.

Caffeine

Beyond the Three Levers of Performance (carb, sodium and fluid), caffeine is one of only a few substances that is proven to improve performance for most endurance athletes as it can help stave off mental and physical fatigue.

Didn't pre-load caffeine
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Consuming caffeine in the hours before the start may have increased perceived energy levels
Caffeine per kg
Recommended 3-6mg/kg
~9.5
mg
Our thoughts

Nicole surpassed the recommended caffeine dose and actually took some of her PF 30 Caffeine Gels quite late on in the race. Given it takes ~45-60 minutes for caffeine to peak in the bloodstream, she likely missed out on some of the ergogenic effects when she needed it most. Going forward, she could consume smaller doses earlier on in the run to gain the largest benefit and avoid any negative impacts of large doses.

How Nicole hit her numbers

Here's everything that Nicole ate and drank on the day...

Nicole's weapons of choice

Final thoughts

Nicole's Satisfaction Rating
10
/10
Throughout the race I felt quite calm mentally, and compared to my last IRONMAN® race this was a huge improvement.
Nicole
Nicole had a great first IRONMAN® World Champs experience, demonstrating significant improvements in her fuel and hydration strategy compared to her last race. For the future, she could benefit from increasing her carb intake, especially on the bike, and further refining her sodium intake to more closely match her super salty sweat losses.
PF&H

Nicole's full stats

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Overall
732g total carb
63g per hour
4,330ml total fluid
374ml per hour
5,882mg total sodium
509mg per hour
1,358mg
Sodium per litre
515mg total caffeine
9.5mg per kg
Bike and Run
Bike
Run

Data Confidence
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We rate each of our case studies from 1-5 based on the level of accuracy, and our confidence in the data.
1
2
3
4
5

There is an adequate level of accuracy in the data collected and the numbers reported. The athlete manages to recall what they ate and drank including most specifics (brands flavours quantities plausible estimations of volumes). However there are estimations made within the data which affect the overall confidence level in the data reported.

Nicole's recent case studies

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