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Case studies

RunningUltra
27th June, 2026

Western States® 100-Mile Endurance Run

Lauren Puretz

161.3km
17hrs 24mins

Carb per hour: 73g

Sodium per hour: 472mg

Fluid per hour: 483ml

Relative sodium concentration: 978mg/L

View Lauren'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
RunningUltra
25th October, 2025

Javelina Jundred

Lauren Puretz

161.0km
14hrs 52mins

Carb per hour: 81g

Sodium per hour: 455mg

Fluid per hour: 485ml

Relative sodium concentration: 939mg/L

View Lauren's Numbers
RunningUltra
29th August, 2025

UTMB®

Lauren Puretz

174.0km
24hrs 54mins

Carb per hour: 71g

Sodium per hour: 441mg

Fluid per hour: 382ml

Relative sodium concentration: 1155mg/L

View Lauren's Numbers
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1st
RunningUltra
17th May, 2025

Ram Party Ultra

Lauren Puretz

60.0km
5hrs

Carb per hour: 77g

Sodium per hour: 475mg

Fluid per hour: 250ml

Relative sodium concentration: 1901mg/L

View Lauren's Numbers
RunningUltra
8th February, 2025

Black Canyon 100km

Lauren Puretz

100.0km
9hrs 8mins

Carb per hour: 58g

Sodium per hour: 367mg

Fluid per hour: 386ml

Relative sodium concentration: 951mg/L

View Lauren's Numbers
3rd
RunningUltra
26th October, 2024

Javelina Jundred

Lauren Puretz

161.0km
15hrs

Carb per hour: 74g

Sodium per hour: 337mg

Fluid per hour: 520ml

Relative sodium concentration: 649mg/L

View Lauren's Numbers
2nd
RunningUltra
21st September, 2024

Mammoth Trail Fest 50km

Lauren Puretz

50.0km
5hrs 26mins

Carb per hour: 77g

Sodium per hour: 119mg

Fluid per hour: 193ml

Relative sodium concentration: 618mg/L

View Lauren's Numbers
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RunningUltra
29th June, 2024

Western States® 100-Mile Endurance Run

Lauren Puretz

161.3km
18hrs 52mins

Carb per hour: 67g

Sodium per hour: 353mg

Fluid per hour: 582ml

Relative sodium concentration: 606mg/L

View Lauren's Numbers
3rd
RunningUltra
14th April, 2024

Gorge Waterfalls 50km

Lauren Puretz

50.0km
4hrs 38mins

Carb per hour: 97g

Sodium per hour: 201mg

Fluid per hour: 377ml

Relative sodium concentration: 535mg/L

View Lauren's Numbers