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Ant Gritton

Challenge Roth

7th July, 2024
Germany
Roth
Top 10, M35-39
Triathlon, Full distance - 226.2km
15°C
, Mild
8hrs 34mins
more race details

Ant's headline numbers

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?
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~97
g
Carb per hour
Recommended 90g/h+
~454
ml
Fluid per hour
Recommended 500-1,000ml/h
~1,465
mg
Sodium per litre
Recommended 1100-1500mg/L
~7.0
mg
Caffeine per kg
Recommended 3-6mg/kg

Ant'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
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T - 15mins: Took in a final dose of carb
Carb per hour
Recommended 90g/h+
~97
g
Ant's Energy Rating
10
/10
"Apart from a dip at around 120km on the bike, which I believe was from going too hard trying to play catch up after dropping my chain, my energy levels were really good all day long. The final 10km on the bike were a bit of a slog, but then isn’t it always?! As soon as I was off the bike, my legs felt great and the marathon was paced reasonably well."
Our thoughts

Ant felt like he fuelled the entire race superbly, with the only thing derailing his efforts being when his bike chain came off, and he was forced to pull over and fix it. Unfortunately, he lost the ‘group’ of athletes he was riding with in the process, so pressed the pedals harder than he possibly should have to catch up, successfully “cooking his legs” in the process. Heading onto the run, Ant had done a sterling job keeping his carb intake high on the bike and after transitioning onto two feet, he mentioned feeling “bouncy and full of energy” as soon as he began the marathon. Similarly to the bike, Ant’s legs began to fail him in the latter miles, but as he actually rebutted our typical trend by increasing his hourly carb intake on the run (~105g/h) vs the bike (~101g/h), this was likely due to muscular fatigue rather than energy availability.

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.

Ant1351mg/L
Ant 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.

Given Ant’s losses are High (1,351mg/L), nailing his hydration strategy remains important, even when it’s Mild.

Learn more
Pre-loaded electrolytes
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T - 60mins: Drank ~500ml of strong electrolyte drink
Fluid per hour
Recommended 500-1,000ml/h
~454
ml
Sodium per litre
Recommended 1100-1500mg/L
~1,465
mg
Ant's Hydration Rating
8
/10
"I didn’t drink as much as I had planned, because I was peeing a lot during the bike. I carried extra PH 1500 Tablets in my bento box, but only added them to one additional bottle, instead of the three bottles I had planned. I was dehydrated at the finish, and I think this affected my recovery as my pee was definitely a dark shade for a couple of days afterwards."
Our thoughts

Ant has adapted his preloading strategy to include some over-concentrated PF Carb & Electrolyte Drink Mix (mixed to a relative sodium concentration of 1,500mg/L). This ticked the box of the concentration required to trigger the physiological effects of preloading, whilst adding a decent dose of carbohydrates to top off his fuel stores before race-start. Typically, the peeing Ant experienced at the start of the bike is caused by over-drinking, or ‘under-salting’ fluids, where the fluid retaining properties of sodium aren’t utilised. Considering the mild temperatures, Ant’s fluid and sodium intake was likely in line with his sweat losses, so perhaps a bit too much fluid pre-race, alongside high circulating adrenaline levels may have caused him to pee more than normal in the early stages. Thankfully, backing off his intake early on meant Ant could reignite his hydration strategy during the run to help prevent an even bigger deficit. Even so, Ant finished feeling quite dehydrated and made the most of the liquids available in the finish area.

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
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T - 0-4hrs: Had a final hit of caffeine
Caffeine per kg
Recommended 3-6mg/kg
~7.0
mg
Our thoughts

Ant has utilised the performance enhancing capabilities of caffeine in all of his previous race intake analyses. During this race, Ant made the conscious decision to take a slightly higher dose than the scientific guidelines would suggest, taking a PF 30 Caffeine Gel before the swim, then two more during both the bike and run. This tipped him slightly above the aforementioned guidelines for using the stimulant during a race of this intensity and duration. However, Ant’s high perceived tolerance and substantial daily caffeine consumption, alongside the absence of any negative side effects, mean this was likely a suitable intake for him, and we wouldn’t recommend changing this part of his strategy.

How Ant hit his numbers

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

Ant's weapons of choice

Final thoughts

Ant's Satisfaction Rating
8
/10
I was stoked with my time, as anything under 8:40 was the main aim. Deep down I was hoping to dip under 8 hours 30, but my legs on the marathon didn’t quite have the spring I needed.
Ant
Ant’s last full distance race ahead of the IRONMAN® World Championships in Hawaii went about as well as he could have hoped. Ahead of his next race on the Big Island, where temperatures will likely be higher, he should continue to dial in his fluid intake by regularly completing sweat rate tests, and ideally getting into a heat chamber to simulate the warmer climate. Aside from Ant crushing his fuel and hydration strategy during this race, arguably the most impressive outcome from his time in Roth was securing the PF&H full distance staff record, previously held by Ambassador Team Manager and ex-pro triathlete, Brad Williams. Speedy stuff, Ant!
PF&H

Ant's full stats

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?
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Overall
833g total carb
97g per hour
3,890ml total fluid
454ml per hour
5,700mg total sodium
665mg per hour
1,465mg
Sodium per litre
503mg total caffeine
7.0mg 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.

Ant's recent case studies

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