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Steph McCall

Steph McCall

Bondi to Manly Ultra

25th October, 2025AustraliaSydney1st, FPRO

Steph's headline numbers

~90g
Carb per hour
Recommended 90g/h+
~832ml
Fluid per hour
Recommended 500-1,000ml/h
~750mg
Sodium per litre
Recommended 800-1200mg/L
~8.2mg
Caffeine per kg
Recommended 3-6mg/kg

Steph'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 90g/h+
~90g
Steph's Energy Rating9/10

"Fueling wise it was very smooth sailing! I had no issues at all with my gels and my energy felt good throughout."

Our thoughts

Given the early race start, Steph chose to skip her pre-race gel as she felt confident she had sufficiently carb-loaded. Once the race began, she took a PF 30 Gel every 20 minutes, and impressively stuck to this routine meticulously across nearly seven hours of racing, providing her with high energy availability throughout. This meant she averaged ~90g of carb per hour, perfectly aligning with her target and the upper end of the fueling recommendations for a race of this intensity and duration. This was the first race where Steph had consumed this level of carb across this duration, and the fact that she experienced no gut discomfort or flavour fatigue demonstrates how well she practised her strategy in training.

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 500-1,000ml/h
~832ml
Sodium per litre
Recommended 800-1200mg/L
~750mg
Steph's Hydration Rating8/10

"I think I did pretty well, but I probably would have refilled my flasks at 10km to get ahead of myself rather than waiting until a little further."

Our thoughts

The Bondi to Manly race posed a new challenge for Steph as it was her first race where she needed to carry and refill her own flasks along the way. She used two 500ml soft flasks and refilled them throughout, one containing a PH 1500 (Tablet) and the other with plain water, allowing her to drink according to thirst and avoid flavour fatigue, whilst taking on a moderate relative sodium concentration. Across the 80km, Steph drank ~5.65L of fluid in total, adjusting her hourly fluid intake as temperatures rose to 23℃. Although looking back she noted she would have refilled earlier and used the first aid station to stay ahead of her hydration, subjectively she felt she drank enough overall and avoided any performance decline or other symptoms of excessive dehydration. She did experience minor quad cramps in the second half of the race, but she attributed this to muscle fatigue. Still, a sweat test would help fine tune her sodium replacement strategy to meet her individual needs and ensure her electrolyte and fluid balance isn’t one of the factors at play in future races.

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

Caffeine per kg
Recommended 3-6mg/kg
~8.2mg
Our thoughts

Steph demonstrated one of the most common timings of caffeine supplementation%20of%20modern%20sport) by taking a large dose of ~6mg/kg within the final 60 minutes before the start. This meant her plasma caffeine levels would have peaked between 3-6mg/kg around the time the race started, increasing her concentration and alertness in the early hours. She then topped up with a PF 30 Caffeine Gel around the halfway mark to avoid a drop-off in the stimulant which could impact her perceived energy levels. Though this put her *total* dose over the recommended range, it helped maintain stable caffeine levels in her system throughout and is a similar strategy to what she has tested and used on previous race days.

How Steph hit her numbers

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

Before race (>30 mins)
Pre-race (<30 mins)
  • 3 x Caffeine gum (100mg caffeine)
During

Final thoughts

Steph's Satisfaction Rating9/10

I'd say for an ultra it was pretty undramatic vs what it could have been with the course and distance so I'll take that!

Steph

Steph implemented her most effective fuel and hydration strategy to date to help her win her ‘A’ race of the year. Sticking to her well-practised fueling strategy and consistently hydrating with water and electrolytes helped her maintain her energy levels and replace her sweat losses across the ~7 hours of racing.

PF&H

Steph's full stats

Overall
610g total carb90g per hour
5,650ml total fluid832ml per hour
4,238mg total sodium624mg per hour
750mgSodium per litre
400mg total caffeine8.2mg per kg

Data Confidence

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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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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