Carb loading: meaning and usage for runners
Carb loading means increasing carbohydrate intake before a long race so muscles start with fuller glycogen stores.
Example
Example: A marathoner may add rice, pasta, potatoes, or sports drink in the final two days so the start line does not arrive with half-empty glycogen stores.
Why it matters
Carb loading matters most when the race is long enough to drain glycogen. It helps explain why half marathon and marathon nutrition differs from a short 5K routine.
How runners use it
Keep the final meals familiar and easy to digest. Increase carbohydrates without overeating fiber, fat, or unfamiliar foods that can upset race-morning digestion.
Related terms
Related resources
FAQ
What does Carb loading mean for runners?
Carb loading means increasing carbohydrate intake before a long race so muscles start with fuller glycogen stores.
Should beginner runners know Carb loading?
Yes. Carb loading appears in training logs, race instructions, and runner conversations, so knowing the basic meaning helps you act on the information.