Is it better to have a big dinner or big breakfast before a long run?

Is it better to eat a carb-heavy dinner the night before a long run, or have a big breakfast?

It’s preferable to fuel up with carbs the night before rather than
 having a big breakfast, which could cause gastrointestinal problems. But don’t overdo the meal the night before, as this, too, could create problems if you overload your system. It’s better 
to spread out your carb intake throughout the whole day before the run, so have some extra carbs at breakfast and lunch, too. It’s also helpful to include a couple of snacks during the day. A good choice for dinner would be something like rice or pasta with chicken and steamed veg, avoiding high-fibre options. A pre-run breakfast can be something light like a bagel or toast with peanut butter or jam or some porridge. Note the nutrition strategies that work for you on your long-run days; this will help you to get it right on race day. 

Need a little breakfast inspiration? Try this fruity bircher muesli, some homemade beans on toast or these fancy toast toppings.