Carb Loading

Race-week carb load.

Top up muscle glycogen before your A race. Hit 8–12 g of carbs per kg per day for 2–3 days, spread across 5–6 meals. Cut fat & fibre, lean on familiar foods.

Per day
700g
10 g/kg for 3 days
Daily fluid
3.5L
+ 2–3 g sodium/day
Race morning
210g
3 g/kg, 3–4 h pre-race
Breakfast (7–8 AM)
Begin moderate carb increase
108g
Mid-morning (10 AM)
Light snack
49g
Lunch (12–1 PM)
Substantial meal, reduce fiber
108g
Afternoon (3 PM)
Carb-focused snack
49g
Dinner (6–7 PM)
Largest meal of the day
137g
Evening (9 PM)
Optional light carb snack
39g

Eat lots of

  • • White rice (45 g / cup)
  • • White pasta (43 g / cup)
  • • Bagels (48 g each)
  • • Bananas (27 g each)
  • • Pretzels, white bread, sports drinks
  • • Honey, jam, dates, applesauce

Avoid race week

  • • High-fibre veg (broccoli, kale, beans)
  • • Whole grains the last 24–36 h
  • • Fatty, greasy, fried foods
  • • Anything new — only foods you know
  • • Alcohol (dehydrates, hurts sleep)
The water gain is the point. Glycogen binds ~3 g of water per gram. Expect 1–3 lb of scale gain — that's stored fuel, not fat. Don't restrict the night before.

Common questions

How many carbs per kg should I eat when loading?

Target 10–12 g of carbohydrate per kg of body weight per day for 2–3 days before your race. First-timers start at the low end (10 g/kg), experienced loaders can push 12 g/kg.

When should I start carb loading?

Begin 2–3 days out. Modern research shows longer loading windows give no extra benefit and often cause GI discomfort. Hit the daily total, then taper fiber and fat the last 24–36 hours.

Will I gain weight from carb loading?

Yes, 1–3 lb (0.5–1.5 kg) is normal and expected. Every gram of glycogen binds ~3 g of water — the scale gain means it worked. Don't restrict the night before.

What about race morning?

3–4 hours pre-race: ~3 g/kg of carbs from familiar, low-fiber sources (white bagel, oatmeal, banana). 15–30 min pre-race: 25 g quick carbs (gel + water).

From the coach

Race-week fueling, dialed in by your coach.

Carb loading works when it's integrated with your taper, your bricks, and your race-day gut. 1:1 coaching gets every piece right.

Boston-based · Trilingual EN/PT/ES · RRCA · USAT · TrainingPeaks L2 · 12× Boston qualifier