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Lisa Weightman

Pro

Berlin Marathon

29th September, 2024
Germany
Berlin
Top 20, FPRO
Running, Marathon - 42.2km
9°C
, Cold
2hrs 24mins
more race details

Lisa's headline numbers

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?
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~54
g
Carb per hour
Recommended 75g/h
~228
ml
Fluid per hour
Recommended 100-500ml/h
~273
mg
Sodium per litre
Recommended 400-800mg/L
~2.5
mg
Caffeine per kg
Recommended 3-6mg/kg

Lisa'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 75g/h
~54
g
Lisa's Energy Rating
7
/10
"I think I could be more precise with my carb measurements next time. I felt great in the first half, but just couldn't sustain it."
Our thoughts

Lisa stepped up her carb intake for the Berlin Marathon compared to her last race at the Sunshine Coast Half Marathon by adding a few more PF 30 Gels during the run. Incorporating more carbs for longer races like a marathon is a sensible way to ensure she can sustain her pace for the full distance. Adding one or two more PF 30 Gels could have brought her closer to the recommended 75g per hour, potentially preventing the energy dip she experienced later in the race. Lisa also acknowledged that she could have been carrying some fatigue from the demands of being an Olympic reserve for Paris 2024 and the need to stay in peak form for both events. This double focus likely impacted her ability to fully prepare for and peak at Berlin specifically.

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.

Lisa614mg/L
Lisa 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.

Whilst Lisa’s losses are on the low side, getting her hydration strategy right is still important if she wants to perform at her best.

Learn more
Pre-loaded electrolytes
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T - 60mins: Drank ~500ml of strong electrolyte drink
Fluid per hour
Recommended 100-500ml/h
~228
ml
Sodium per litre
Recommended 400-800mg/L
~273
mg
Lisa's Hydration Rating
7
/10
"I stayed well hydrated throughout the race but this wasn’t what let me down."
Our thoughts

Lisa’s fluid intake was well-suited to the cool race conditions. She picked up PF Carb & Electrolyte Drink Mix around the 5km mark and opted for plain water at subsequent aid stations. Although her sodium intake was lower than recommended, she avoided cramps or significant signs of dehydration. Aside from some ankle discomfort and a sense that her legs couldn’t run faster, she reported no major issues. In future races, Lisa could consider taking some Electrolyte Capsules to increase the amount of sodium she consumes to support her hydration status.

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
~2.5
mg
Our thoughts

At the 25km mark, Lisa took a PF 30 Caffeine Gel, which likely provided an energy boost for the final 10km. She may have seen greater benefits from taking an additional PF 30 Caffeine Gel before the race or within the first 5-15km, instead of her usual PF 30 Gel. This approach would have delivered more consistent ergogenic effects, aligning her intake with the recommended 3-6mg/kg of caffeine, and potentially enhancing her performance.

How Lisa hit her numbers

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

Lisa's weapons of choice

Final thoughts

Lisa's Satisfaction Rating
6
/10
2024 has been the toughest year of my life. Despite setbacks like missing out on my 5th Olympics and challenges in Valencia and Osaka, I’m proud of my Berlin performance at 45. My preparation wasn’t ideal, but I gave it my all and proved that you fight for what you’ve earned, no matter what.
Lisa
Overall, Lisa had a tough race in what's been a very challenging year. She managed a fantastic result in Berlin, and with a few more gels and an improved caffeine strategy she could be on her way to sub 2:22!
PF&H

Lisa's full stats

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?
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Overall
129g total carb
54g per hour
550ml total fluid
228ml per hour
150mg total sodium
62mg per hour
273mg
Sodium per litre
110mg total caffeine
2.5mg per kg

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.

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