1 October 2026

The foods to avoid before a run are the ones that digest slowly or stir up your gut: fried and greasy takeaway, large servings of high fibre foods, spicy dishes, fizzy soft drinks and, for anyone sensitive to dairy, milk based drinks and big yoghurt bowls. They cause trouble because a stomach that is still busy digesting while you run often answers with a stitch, bloating or an urgent detour. The fix is simple: keep pre run food light, familiar and built on plain carbohydrates.

Why some foods fight back mid run

When you run, your body sends blood towards your legs and away from your stomach. Whatever is still in there needs to either settle quietly or make itself known, and heavy, rich or spicy food rarely settles quietly. Fat and fibre slow digestion down, spice can irritate the gut, and carbonation adds gas where you would rather not have it.

The good news is that none of these foods are bad in themselves. A curry or a plate of hot chips on a normal evening is nobody's problem. They only become a problem when the run starts before the food has settled, which is exactly the situation most of us create the night before or the morning of a club run.

Foods to avoid before a run

Here are the foods runners blame most often when a run goes sideways, and what works better in their place.

Notice the last row, because it is the one that catches people out. Run day, especially a morning you are excited about, is a bad day to experiment. If a food has let you down on a run once, treat that as your own data point rather than arguing with it.

Timing changes what you can get away with

Most of these foods are fine when there is a real gap between eating and running. A generous pasta dinner the night before a 6:00am start is normal pre run eating. The same dinner ninety minutes before the start is a gamble.

As a rough pattern, a full meal wants two to three hours to settle, a small meal an hour or two, and a snack such as a banana or a slice of toast with jam needs about half an hour. Those are starting points, not rules: your own stomach is the authority, and it is worth testing any timing on an easy run before you rely on it on a day that matters to you.

How this plays out at our club runs

Our Thursday Morning Run meets at 5:45am for a 6:00am start at Glenhaven Oval, 78 Glenhaven Road, Glenhaven. At that hour, the practical answer is a small snack soon after waking rather than a full breakfast, which leaves no time for anything heavy to cause trouble. Afterwards there is coffee and a sweet treat, which is where most of the day's eating ambition should be pointed anyway.

The Tuesday Night Run meets every second Tuesday at 6:45pm for a 7:00pm start at Castle Hill Showground, Castle Hill, under the lights. Enter via Doran Drive, the entrance closest to the metro, take the first left and follow the road around to the lit oval, where the group meets at the large shed with plenty of parking. There, the question is usually dinner rather than breakfast, and the simple order that works for most people is a light snack before the start and the main meal afterwards.

Both runs give you a distance choice: 2.5 km or 5 km on Thursday mornings, 3 km or 6 km on Tuesday nights, and one lap is a completely good run. Walkers are welcome at every session.

What to eat instead

Every avoid-list needs a do-list. The short version: plain carbohydrate, familiar food and a portion that matches the time you have. Toast with jam, a banana, porridge with time to spare, or whatever has already survived a dozen mornings with you.

We compared the good options in detail in our guide to the best pre-run breakfast foods for runners, so this article does the job of steering you away from the troublemakers and that one takes care of the rest.

And the biggest avoid of all: skipping the run because breakfast felt uncertain. Your stomach will forgive an ordinary morning far sooner than your legs will forgive a fortnight on the couch. Running with the club is free, so make a free HRC+ account, register for a run through our runs page and come along.