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Jason Osborne

Pro

Santa Vall Day 1

15th February, 2025
Spain
Girona
19th, MPRO
Cycling, Gravel - 80km
11°C
, Mild
2hrs 21mins
more race details

Jason's headline numbers

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?
?
~155
g
Carb per hour
Recommended 90g/h+
~638
ml
Fluid per hour
Recommended 250-750ml/h
~143
mg
Sodium per litre
Recommended 700-1100mg/L
0
mg
Total caffeine

Jason'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)
Didn't pre-fuel
?
Jason would benefit from taking in a final dose of carb <30 minutes before
Carb per hour
Recommended 90g/h+
~155
g
Jason's Energy Rating
7
/10
"To be honest I felt a bit empty towards the end which was surprising given all the carbs, but I was solo at the front pushing ~350-400 watts then ~500 on the short climbs, so it was a big effort. "
Our thoughts

Jason started his day with a rice-based carb-rich breakfast along with some traditional German snacks (1 x packet of Haribo sweets) to ensure he began the race with fully topped up glycogen stores. During the race, he planned to carry four 500ml bidons, each filled with 120g carb in the form of Carb Only Drink Mix. Unfortunately, Jason dropped one of these bottles and missed a pick up at the chaotic feed zone, only securing one of his replacement bottles along with a third bottle from a friendly soigneur from another team. Although Jason missed some of his planned intake, he was still able to achieve the highest ever recorded carb intake in our Athlete Case Study Database at ~155g/h. Although this falls well-above the current recommendations, we are seeing elite cyclists with enormous rates of energy utilisation consuming well over 90g/h without issue and often to their benefit. This is especially true for stage races where repeat performance is crucial to success and increased carb intake can enhance recovery and next day performance following exhaustive exercise. Jason was off the front for the majority of the race, but unfortunately, he couldn’t come away with the win due to some classic gravel equipment issues despite feeling like he had enough energy and form on the day to do so.

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.

Jason860mg/L
Jason 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 Jason’s losses are on the moderate side, getting his hydration strategy right is still important if he wants to perform at his best.

Learn more
Didn't pre-load electrolytes
?
Drinking a strong electrolyte drink before the race could have helped Jason start optimally hydrated
Fluid per hour
Recommended 250-750ml/h
~638
ml
Sodium per litre
Recommended 700-1100mg/L
~143
mg
Jason's Hydration Rating
7
/10
"I didn’t drink too much before the race as there was a decisive climb early on and I wanted to have a small weight advantage there, and then drink in the race. Perhaps I could have included some sodium, but I am happy with the fluid intake during the race. "
Our thoughts

One of the replacement bottles he secured after missing two of his own came from a helpful soigneur. Even though he didn’t know what product was contained in the bidon, this was a small risk Jason decided to take, as he typically doesn’t have a sensitive stomach. After tasting it, he noted it was not very concentrated and was therefore unlikely to cause him issues and he’d benefit from having the fluid on board. With this being such a short and cool race, ~638ml per hour was likely sufficient to maintain performance throughout. Jason noticed some small cramps, and although he suggests these did not heavily impact his performance, we would recommend he preloads with a strong electrolyte drink before his races to start optimally hydrated. Additionally, he should consider including some electrolytes in his drinks during races to ensure he stays more optimally hydrated throughout, and help reduce the risk of any further cramping. Focusing on preloading with electrolytes and replacing his losses during exercise will become more crucial as his races get longer and occur in warmer conditions, when net sodium losses increase with higher sweat rates and exercise duration.

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 - 0-4hrs: Had a final hit of caffeine
Total caffeine
0
mg
Our thoughts

Like any pro cyclist, Jason loves his pre-ride coffees. Sometimes, those sensitive coffee scales can also be used for measuring out your Carb Only Drink Mix to the gram like he does… Jason had two flat whites before this race but didn’t top up with any more caffeine. This meant that he was below the guidelines for caffeine usage and could benefit from additional doses before and during his race to increase focus and mask fatigue over longer races.

How Jason hit his numbers

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

Jason's weapons of choice

Final thoughts

Jason's Satisfaction Rating
8
/10
I really feel like the gravel thing is playing much more into my cards. It feels like it's more strength that defines the racing, which suits me. I think my first win is not far off.
Jason
Although Jason didn’t quite nail his fuel and hydration strategy in this first outdoor race of the season, he has the promise of some incredible results this year. Considering his impressive carb intake and tolerance, he’ll be able to handle some extreme training loads and races in the upcoming season. With a few adjustments to his strategy, particularly incorporating sodium and optimising his caffeine intake, he will be a force to be reckoned with on the dirt trails.
PF&H

Jason's full stats

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?
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Overall
366g total carb
155g per hour
1,500ml total fluid
638ml per hour
215mg total sodium
91mg per hour
143mg
Sodium per litre

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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