Nutrition
Gut Training Progression Block
A gut training progression block ramps hourly race carbs and fluids over weeks on long runs at goal pace—one product change at a time until race targets stick.
A gut training progression block ramps race carbs, fluids, and gel brands across four to eight weeks on long runs—starting near thirty grams per hour and adding ten to fifteen grams weekly if tolerated. Practice at marathon effort, not only easy pace.
Hold products constant within a block; change one variable at a time.
Common questions
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How fast should you increase carbs per hour?
Many add ten to fifteen grams per week on long runs if no distress; back off one week if bloating or urgency returns. Race-week is for rehearsal, not first exposure.
Related terms
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