/

Ross Harper

IRONMAN World Championships

9th September, 2023
France
Nice
Top 20, M30-34
Triathlon, Full distance - 226.2km
26°C
, Hot
9hrs 53mins
more race details

Ross' headline numbers

?
?
?
~99
g
Carb per hour
Recommended 90g/h+
~616
ml
Fluid per hour
Recommended 500-1,000ml/h
~450
mg
Sodium per litre
Recommended 400-800mg/L
~8.2
mg
Caffeine per kg
Recommended 3-6mg/kg

Ross' 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-loaded
?
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+
~99
g
Ross' Energy Rating
7
/10
"My energy levels felt great during the swim and bike but took a major dip halfway through the run."
Our thoughts

Using the new PF 300 Flow Gel as part of his fueling strategy during the challenging bike course in Nice, Ross consumed over ~130g of carbohydrate per hour. We’re seeing more athletes reaching up to and in excess of 120g/h on the bike leg, but this takes a large amount of gut training in race simulation sessions to tolerate this intake on race day. On the run however, Ross didn’t stick to his fueling plan and his carb intake dropped over 50% per hour from the bike to ~54g/h. A reduction from the bike to the run is expected, but Ross should look to increase his run intake to avoid the energy dip he experienced towards the end of the marathon.

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.

Ross594mg/L
Ross has been Sweat Tested to dial in his 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.

Whilst Ross’s losses are on the low side, getting his hydration strategy right is still crucial when it’s hot and/or humid as his higher sweat rate in these conditions can result in significant net losses over the duration of a race.

Learn more
Pre-loaded electrolytes
?
T - 60mins: Drank ~500ml of strong electrolyte drink
Fluid per hour
Recommended 500-1,000ml/h
~616
ml
Sodium per litre
Recommended 400-800mg/L
~450
mg
Ross' Hydration Rating
8
/10
"I felt I drank enough during the race as I peed a few times throughout the race."
Our thoughts

After chatting with the PF&H Sports Science team pre-race, Ross executed a hydration strategy specific to his sweat losses. By using PH 1000 and PH 1500 in two of his bottles on the bike and proactively picking up water at each aid station, he took on a relative sodium concentration similar to his sweat concentration, and drank a suitable volume per hour to stay hydrated in the warm conditions. Ross may look to take Electrolyte Capsules on the run alongside the water he is picking up to maintain this strategy towards the end of the race.

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.

Pre-caffeinated
?
T - 30mins: Had a final hit of caffeine
Caffeine per kg
Recommended 3-6mg/kg
~8.2
mg
Our thoughts

Ross used caffeine effectively over the course of the day to glean the associated ergogenic effects. By drinking a coffee in the morning, having a PF 30 Caffeine Gel pre-race, three PF 30 Caffeine Gels during the race and caffeinated energy drinks on the run, he will have kept his blood caffeine levels topped up throughout the race. This high intake meant he slightly exceeded the general guidelines, so he could reduce this and still reap the benefits.

How Ross hit his numbers

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

Ross' weapons of choice

Final thoughts

Ross's Satisfaction Rating
8
/10
I’m slightly annoyed that I didn't keep on top of carbs on the run as it cost me time and energy towards the end of the race, but I’m genuinely happy with the performance I put in which was a big step forward at this level.
Ross
At his second World Championship race, Ross put in a solid performance while taking in an impressive carb intake and using an attentive hydration strategy on the bike. We loved supporting Ross as he ran down the promenade in his magnificent PF&H bucket hat, and with a few tweaks to his run intake,we can't wait to see him perform in Kona next year!
PF&H

Ross' full stats

?
?
?
Overall
975g total carb
99g per hour
6,100ml total fluid
616ml per hour
2,746mg total sodium
277mg per hour
450mg
Sodium per litre
565mg total caffeine
8.2mg per kg
Bike and Run
Bike
Run

Data Confidence
?

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.

Ross' recent case studies

see all
Nail your next event with a FREE Fuel & Hydration Plan
Get started