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Case studies

RunningMarathon
19th April, 2026

Newport Marathon

Julie McCarron

42.2km
5hrs 19mins

Carb per hour: 62g

Sodium per hour: 141mg

Fluid per hour: 422ml

Relative sodium concentration: 334mg/L

View Julie's Numbers
RunningMarathon
19th April, 2026

Manchester Marathon

Megan Hill

42.2km
4hrs 48mins

Carb per hour: 66g

Sodium per hour: 208mg

Fluid per hour: 583ml

Relative sodium concentration: 356mg/L

View Megan's Numbers
1st
TriathlonFull distance
18th April, 2026

IRONMAN® Texas

Solveig Løvseth

226.2km
8hrs 11mins

Carb per hour: 132g

Sodium per hour: 1245mg

Fluid per hour: 1,157ml

Relative sodium concentration: 1076mg/L

View Solveig's Numbers
TriathlonFull distance
18th April, 2026

IRONMAN® Texas

Rachel Velarde

226.2km
13hrs 32mins

Carb per hour: 83g

Sodium per hour: 729mg

Fluid per hour: 655ml

Relative sodium concentration: 1113mg/L

View Rachel's Numbers
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RunningUltra
12th April, 2026

Gorge Waterfalls 50km

Liam Meirow

50.0km
3hrs 57mins

Carb per hour: 103g

Sodium per hour: 997mg

Fluid per hour: 640ml

Relative sodium concentration: 1557mg/L

View Liam's Numbers
1st
RunningUltra
11th April, 2026

Gorge Waterfalls 100km

Lotti Brinks

98.9km
9hrs 6mins

Carb per hour: 90g

Sodium per hour: 412mg

Fluid per hour: 384ml

Relative sodium concentration: 1071mg/L

View Lotti's Numbers
2nd
TriathlonMiddle distance
28th March, 2026

IRONMAN 70.3® Oceanside

Solveig Løvseth

113.1km
4hrs 3mins

Carb per hour: 139g

Sodium per hour: 794mg

Fluid per hour: 727ml

Relative sodium concentration: 1093mg/L

View Solveig's Numbers
TriathlonMiddle distance
28th March, 2026

IRONMAN 70.3® Oceanside

Erin Hervey

113.1km
6hrs 49mins

Carb per hour: 49g

Sodium per hour: 653mg

Fluid per hour: 457ml

Relative sodium concentration: 1428mg/L

View Erin's Numbers
Most of these athletes use PH 1500 to start hydratedRead our guide to starting hydratedTake a look
3rd
RunningUltra
21st March, 2026

Ultra Trail Chianti Castles

Rachel Entrekin

120.0km
11hrs 38mins

Carb per hour: 66g

Sodium per hour: 485mg

Fluid per hour: 495ml

Relative sodium concentration: 979mg/L

View Rachel's Numbers
RunningUltra
21st March, 2026

Ultra Trail Chianti Castles

Lauren Puretz

120.0km
12hrs 25mins

Carb per hour: 81g

Sodium per hour: 445mg

Fluid per hour: 445ml

Relative sodium concentration: 999mg/L

View Lauren's Numbers
RunningMarathon
8th March, 2026

Los Angeles Marathon

Andy Blow

42.2km
2hrs 58mins

Carb per hour: 101g

Sodium per hour: 420mg

Fluid per hour: 484ml

Relative sodium concentration: 868mg/L

View Andy's Numbers
RunningMarathon
8th March, 2026

Los Angeles Marathon

Dave Blow

42.2km
3hrs 14mins

Carb per hour: 75g

Sodium per hour: 474mg

Fluid per hour: 619ml

Relative sodium concentration: 766mg/L

View Dave's Numbers
Most athletes seen here eat a gel just before they start(Usually it's a PF 30 Gel...)Learn more