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Case studies

2nd
RunningUltra
28th August, 2026

UTMB

Rachel Entrekin

173.6km
22hrs 15mins

Carb per hour: 52g

Sodium per hour: 445mg

Fluid per hour: 469ml

Relative sodium concentration: 948mg/L

View Rachel's Numbers
1st
RunningUltra
4th May, 2026

Cocodona 250

Rachel Entrekin

409.0km
56hrs 9mins

Carb per hour: 49g

Sodium per hour: 446mg

Fluid per hour: 341ml

Relative sodium concentration: 1306mg/L

View Rachel's Numbers
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
1st
RunningUltra
8th November, 2025

Pass Mountain 50 mile

Rachel Entrekin

80.0km
8hrs 23mins

Carb per hour: 70g

Sodium per hour: 466mg

Fluid per hour: 1,037ml

Relative sodium concentration: 450mg/L

View Rachel's Numbers
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