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Race Day Carb Calculator | Nutrition
Race Day Carb Calculator - Race day: 60-90g carbs/hour for efforts >2
Built by an engineer who chases finish lines and is obsessed with data. Thomas Prommer — technology executive who has worked with Google, Apple, Nike, Adidas, Netflix and other global brands. Also an Ironman finisher, HYROX Pro Division competitor, and marathon runner. These tools combine engineering rigor with real race experience.
Race Day Carb Calculator
Race day: 60-90g carbs/hour for efforts >2.
Methodology
Race day: 60-90g carbs/hour for efforts >2.5h. 30-60g/h for 1-2.5h. Carb loading: 8-12g/kg in 24h pre-race.
FAQ
How does this calculator work?
Race day: 60-90g carbs/hour for efforts >2.5h. 30-60g/h for 1-2.5h. Carb loading: 8-12g/kg in 24h pre-race.
How accurate is this estimate?
Based on validated formulas with ~10% margin. Individual metabolism varies.
Should I consult a professional?
Yes, especially for medical conditions, eating disorders, or significant weight changes.
How often should I recalculate?
Every 2-4 weeks or after 2-3 kg of weight change.