Open cart

Tim Doran

London Marathon

3rd October, 2021EnglandLondonOther, M40-44

Tim's headline numbers

~84g
Carb per hour
Recommended 75g/h
~456ml
Fluid per hour
Recommended 100-500ml/h
~0mg
Sodium per litre
Recommended 0-1500mg/L
0mg
Total caffeine

Tim'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

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
~84g
Tim's Energy Rating10/10

"My energy levels felt perfect throughout the race, and I think the only reason I ran as well as I did was down to the gels."

Our thoughts

Over the course of the race,Tim fueled consistently to reach the top end of the marathon carbohydrate recommendations, solely from the regiment strategy of taking a PF 30 Gel every 20 minutes and experienced no GI issues in doing so.. Being a shorter race with a higher relative intensity, Tim did well to implement a strategy that achieved over ~20g/h higher than his intake at Race to the Stones earlier in the year.

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.

Pre-loaded electrolytes

T - 60mins: Drank ~500ml of strong electrolyte drink

Fluid per hour
Recommended 100-500ml/h
~456ml
Sodium per litre
Recommended 0-1500mg/L
~0mg
Tim's Hydration Rating8/10

"I think I drank enough because I didn't get thirsty and I know that if I pushed harder in the race I could have adjusted what I was drinking accordingly. "

Our thoughts

Tim drank a sufficient amount of fluid to ensure he replaced a large proportion of his sweat losses, neither excessively under or overdoing his fluid intake, across the under three hour marathon, supported by the fact he peed once. Despite pre-loading before the race with PH 1500, Tim did not consume any sodium during the race and could benefit from introducing sodium into his strategy going forward, conditions where accumulating a deficit can be of greater detriment to performance, for example by carrying some Electrolyte Capsules a common strategy to get sodium on board in our marathon case studies.

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

Consuming caffeine in the hours before the start may have increased perceived energy levels

Total caffeine
0mg
Our thoughts

Similarly to Race to the Stones, Tim didn’t consume any caffeine during the race. We would recommend him to trial using the stimulant during his training to work out if it works for him as indivdual athletes respond differently to it, he can use it in his strategy to compliment his fueling and lower his perception of effort and the effects of fatigue.

How Tim hit his numbers

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

Before race (>30 mins)
Pre-race (<30 mins)
During

Final thoughts

Tim's Satisfaction Rating10/10

For once everything went to plan. I knew lots of runners yesterday and some I beat that I really shouldn’t have, given the little amount of training I had done.

Tim

Despite not having the lead up he would have wanted, Tim was able to put in a solid race and finish in a time of 2 hours 51 minutes with the support of his consistent fueling. He held back in the first half but picked the pace up in the second half (he ran a 5-minute negative split!) and stuck consistently to his fueling plan to finish strongly.

PF&H

Tim's full stats

Overall
240g total carb84g per hour
1,300ml total fluid456ml per hour
0mg total sodium0mg per hour
0mgSodium per litre
0mg total caffeine

Data Confidence

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

12345

There is good confidence in the accuracy of the data reported. An athlete feels that the numbers closely reflect what they consumed despite a couple of estimations which may carry some degree of error. The majority of what was consumed is recorded to a high level of specificity (most volumes are known through the use of bottles brands quantities flavours). The numbers are very plausible and align with previous data recordings (if an athlete has collected data previously).

Tim's recent case studies

see all