Pre-race gut backup
The Runner's
Stomach
What to do when nerves, diarrhea, or an upset stomach threaten the day before or morning of a cross-country race.
Dinner calmBreakfast backupSip don't chugEscalate red flags
Smaller + familiar
Dinner
Simple carbs
Breakfast
Small steady sips
Fluids
Race-eve stomach plan
Do not disappear from food. Shift to simpler carbs, smaller portions, familiar fluids, and a calmer backup plan that still keeps enough fuel alive.
Stomach checklist
Night before
familiar, moderate, lower-fiber meal
Morning
simpler carb plan ready if solids feel hard
Fluids
sip steadily instead of chugging late
Escalate severe or unusual symptoms instead of normalizing them
If the plan breaks
- Breakfast falls apart Use a smaller liquid or simple-carb backup and keep sipping instead of giving up on fuel completely.
- The athlete already feels jittery Cut or skip the caffeine plan and keep the food inputs as calm and familiar as possible.
Stomach mistakes
Not eating at all is usually worse than shifting to simpler fuel.Race morning is not the time to test a new gel, supplement, or coffee habit.
When the gut is noisy, simplify instead of disappearing from food: lighter carbs, steady sips, and zero experiments.