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Case studies

1st
TriathlonMiddle distance
12th July, 2026

IRONMAN 70.3® Swansea

Lizzie Rayner

113.1km
4hrs 23mins

Carb per hour: 101g

Sodium per hour: 662mg

Fluid per hour: 580ml

Relative sodium concentration: 1141mg/L

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TriathlonMiddle distance
8th November, 2025

Precision Fuel & Hydration IRONMAN 70.3® World Championship

Lizzie Rayner

113.1km
4hrs 28mins

Carb per hour: 110g

Sodium per hour: 677mg

Fluid per hour: 717ml

Relative sodium concentration: 944mg/L

View Lizzie's Numbers
1st
TriathlonMiddle distance
18th October, 2025

IRONMAN 70.3® Portugal-Cascais

Lizzie Rayner

113.1km
4hrs 8mins

Carb per hour: 105g

Sodium per hour: 573mg

Fluid per hour: 522ml

Relative sodium concentration: 1097mg/L

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2nd
TriathlonMiddle distance
18th May, 2025

IRONMAN 70.3® Aix-en-Provence

Lizzie Rayner

113.1km
4hrs 14mins

Carb per hour: 102g

Sodium per hour: 530mg

Fluid per hour: 579ml

Relative sodium concentration: 915mg/L

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TriathlonMiddle distance
14th December, 2024

IRONMAN 70.3® World Championships

Lizzie Rayner

113.1km
4hrs 13mins

Carb per hour: 82g

Sodium per hour: 683mg

Fluid per hour: 758ml

Relative sodium concentration: 901mg/L

View Lizzie's Numbers
1st
TriathlonMiddle distance
19th October, 2024

IRONMAN 70.3® Portugal-Cascais

Lizzie Rayner

113.1km
4hrs 15mins

Carb per hour: 78g

Sodium per hour: 249mg

Fluid per hour: 414ml

Relative sodium concentration: 602mg/L

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3rd
TriathlonMiddle distance
14th July, 2024

IRONMAN 70.3® Swansea

Lizzie Rayner

113.1km
4hrs 28mins

Carb per hour: 65g

Sodium per hour: 391mg

Fluid per hour: 447ml

Relative sodium concentration: 875mg/L

View Lizzie's Numbers