An hourly prescription, not a rule of thumb
Carbs, fluid and sodium for every hour of your event — scaled by sport, duration, intensity, your ability tier and the weather at the start line.
- Carb targets rise with gut training — 60 to 120 g/hr
- Fluid from your measured sweat rate, capped for safety
- Sodium gated to what your sweat actually loses
Each hour, aim for
100G CARBS / HR
Fluid650 ml
Sodium500 mg
SourceYour sweat test