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Jane Maus

Pro

Black Canyon 50km

14th February, 2026
USA
Mayer, Arizona
1st, FPRO
Running, Ultra - 50km
5°C
, Cold
3hrs 47mins
more race details

Jane's headline numbers

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~59
g
Carb per hour
Recommended 90g/h+
~595
ml
Fluid per hour
Recommended 500-1,000ml/h
~1,000
mg
Sodium per litre
Recommended 1300-1700mg/L
~3.4
mg
Caffeine per kg
Recommended 3-6mg/kg

Jane'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+
~59
g
Jane's Energy Rating
8
/10
"I had no dips in my pace or energy levels."
Our thoughts

In her first race of the 2026 season, Jane was able to sustain close to 60g of carb per hour over the 50km distance to support her race-winning performance. Even though she experienced some GI discomfort during the race, she was still able to keep on top of her fueling and avoid a dip in her carb intake across the second half of the race (averaging ~56g/h over the first 19 miles and ~64g/h to the finish). In the build up to the race, Jane didn’t complete many long run sessions where she was able to practice her fueling strategy, which would have been helpful in mitigating against what she experienced on race day. As the season progresses and especially ahead of her longer ‘A’ races, Jane should use targeted race simulation sessions to train her gut to incrementally build her tolerance from 60g/h, to 75g/h and ultimately 90g/h to keep her working harder for longer.

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
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T - 60mins: Drank ~500ml of strong electrolyte drink
Fluid per hour
Recommended 500-1,000ml/h
~595
ml
Sodium per litre
Recommended 1300-1700mg/L
~1,000
mg
Jane's Hydration Rating
7
/10
"I had some GI discomfort during the race which is why I switched to plain water."
Our thoughts

In Arizona’s mild conditions, Jane used two 500ml flasks containing PH 1500 (Drink Mix) and water to replace her moderate fluid and sodium losses across the ~3 hours 50 minute race, averaging ~587ml/h and ~605ml/h over the first and second half of the race respectively. In future, Jane should collect specific data on her sweat rate during some of her training runs at race intensity. This would ensure she is replacing enough fluid to avoid too great a level of dehydration, especially during hotter races, as this can play a role in GI comfort (carbohydrates require fluid to aid absorption).

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
~3.4
mg
Our thoughts

Similar to what she did ahead of the World Mountain Championships at the end of 2025, Jane utilised caffeine on race day in the form of two PF 30 Caffeine Gels. By spreading these doses out, she maintained her caffeine levels to benefit from the stimulant’s ergogenic effects right to the finish. She could consider one additional PF 30 Caffeine Gel as her pre-race carb dose to stay within the recommended range but also spike her caffeine levels from earlier in the race.

How Jane hit her numbers

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

Jane's weapons of choice

Final thoughts

Jane's Satisfaction Rating
9
/10
I was very happy with the win and ran 3 minutes faster than my goal time.
Jane
Jane’s first race of the season was a strong one, taking the win in 3:47:04. Her fuel and hydration strategy was kept deliberately simple and executed well. This provides a solid baseline to build from as the year progresses, especially with the help of specific gut training to increase her carb intake as she gets closer to longer, warmer races where maintenance of energy levels will be critical for performance.
PF&H

Jane's full stats

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Overall
225g total carb
59g per hour
2,250ml total fluid
595ml per hour
2,250mg total sodium
595mg per hour
1,000mg
Sodium per litre
200mg total caffeine
3.4mg 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.
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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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