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Case studies

RunningMarathon
7th December, 2025

California International Marathon

Brad Williams

42.2km
3hrs 20mins

Carb per hour: 109g

Sodium per hour: 615mg

Fluid per hour: 464ml

Relative sodium concentration: 1326mg/L

View Brad's Numbers
RunningUltra
12th April, 2025

Devil's Race Track Backyard Ultra

Brad Williams

136.8km
20hrs 5mins

Carb per hour: 64g

Sodium per hour: 343mg

Fluid per hour: 448ml

Relative sodium concentration: 766mg/L

View Brad's Numbers
1st
RunningUltra
8th June, 2024

OSS/CIA Night Run

Brad Williams

83.0km
9hrs 5mins

Carb per hour: 98g

Sodium per hour: 359mg

Fluid per hour: 678ml

Relative sodium concentration: 529mg/L

View Brad's Numbers
RunningUltra
22nd March, 2024

Jurassic Coast Challenge

Brad Williams

136.6km
17hrs 3mins

Carb per hour: 105g

Sodium per hour: 454mg

Fluid per hour: 469ml

Relative sodium concentration: 969mg/L

View Brad's Numbers
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