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Case studies

1st
RunningUltra
6th December, 2025

The Cheviot Goat

Sam Skinner

95.0km
11hrs 54mins

Carb per hour: 132g

Sodium per hour: 288mg

Fluid per hour: 352ml

Relative sodium concentration: 818mg/L

View Sam's Numbers
RunningUltra
11th May, 2024

Ultra Trail Snowdonia

Sam Skinner

100.0km
15hrs 38mins

Carb per hour: 94g

Sodium per hour: 237mg

Fluid per hour: 469ml

Relative sodium concentration: 504mg/L

View Sam's Numbers
2nd
RunningUltra
13th December, 2023

Centurion Winter Downs 200

Sam Skinner

329.0km
53hrs 57mins

Carb per hour: 56g

Sodium per hour: 165mg

Fluid per hour: 340ml

Relative sodium concentration: 487mg/L

View Sam's Numbers
RunningUltra
28th July, 2023

Lakeland 100

Sam Skinner

160.0km
22hrs 7mins

Carb per hour: 91g

Sodium per hour: 349mg

Fluid per hour: 369ml

Relative sodium concentration: 945mg/L

View Sam's Numbers
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RunningUltra
27th January, 2023

Arc of Attrition

Sam Skinner

160.9km
22hrs 42mins

Carb per hour: 87g

Sodium per hour: 343mg

Fluid per hour: 313ml

Relative sodium concentration: 1098mg/L

View Sam's Numbers