Carb calculator

Estimate how many carbohydrates you need for a long run or race from duration and target grams per hour.

Format h:mm:ss or m:ss

g / hr
Total carb target
150 g
Duration
02:30:00

Typical targets range from 30 g/h for shorter efforts up to 90 g/h for well-trained athletes in long races. Practice your plan in training.