Carbo loading (for a Marathon) occurs naturally over the last week or so prior to race day given you’ve cut back training (but not food!!!). Ideally you’ll be replacing some non carb foods with carb choices (more rice less stir fry, more cereal less yoghurt etc) and decrease protein and fibre, just so you can eat more carbs and not get an upset gut, which often happens before major race. More here…
