5 Race Nutrition Habits That Get Triathletes to the Start Line Ready

The five race nutrition habits that get triathletes to the start line ready are: banking your training adaptations and protecting the taper by keeping fuel intake up (not slashing it), recovering properly from every session so those adaptations actually stick, rehearsing race fuelling on every long training session so nothing is new on race day, protecting your immune system in the final weeks of build, and planning and practising a proper individualised carb load well before race week. Miss one and you risk arriving under-fuelled, under-adapted or sick before the gun even goes.

5 Race Nutrition Habits That Get Triathletes to the Start Line Ready

You cannot sneak fitness or gut training into race week.

The work is done, the adaptations are banked - or they're not. Arriving at your race ready to roll has nothing to do with cramming everything in at the last minute. It has everything to do with protecting the work you've already put in and not undoing it in the final stretch.

And the part that's frustrating? Most triathletes already know this. Studies in endurance athletes show many of them can recite the sports nutrition guidelines - but still don't hit them when it counts. One study found only one in ten athletes actually nailed their carb-loading targets in practice. One in ten. Knowing is not doing.

The athletes who consistently reach the start line ready are not the ones with the best intentions in race week. They are the ones who have built specific habits across their entire build. Not cramming. Not hoping. Habits.

Here are the five.

HABIT 1: They bank the adaptations and protect the taper

Race week is not the time to train harder or eat less because you're worried you're going to get fat.

The taper trap is so real. Training volume drops and athletes wig out. You start questioning whether you've done enough, what training mistakes you made. So some athletes punish themselves with extra sessions, while others drop their food right alongside the drop in training. Either way, you roll up to the start line under-fuelled before the gun has even gone off.

The adjustment in race week is usually more carbohydrate relative to your training load, not less - so that you can top up your muscle glycogen fuel tank. You are not trying to get fitter or faster this week. You are not trying to lose weight. You are trying to arrive fresh, with your fuel tank topped up, rested and well-adapted.

Confident athletes back off the training and keep fuelling. Nervous athletes do the complete reverse - and then wonder why their legs feel so tired on race day.

HABIT 2: They recover from every session

The training session is only half of the equation.

You don't get fitter during the session. You get fitter from recovering from it. Because you only adapt from the training you actually recover from.

Recovery nutrition is how the hard work sticks. Skip it and you're breaking your body down without giving it what it needs to rebuild stronger for the next session. The research on glycogen resynthesis is clear: the sooner you get the right fuel in after a session, the faster you will restock. Leave it too long and you blunt the whole process.

This is the difference between an athlete who can back up big week after big week versus one who drags themselves through training with legs that feel like shoes made out of concrete.

If backing up between sessions is your sticking point, the Recovery Accelerator gives you the exact framework Taryn teaches TNA athletes - the four R's of recovery, when to eat, what to eat and when to prioritise it. You can get through it all in one trainer session or a long run. Grab it at dietitianapproved.com/recovery-nutrition-course-triathletes.

HABIT 3: They rehearse race fuelling on every long session

Nothing new on race day. It is the oldest rule in triathlon nutrition - and athletes still break it every single season.

Your long rides and your long runs are your perfect dress rehearsals. Same gels, same nutrition, same timing you plan to use on race day. Your gut is trainable. Practise taking on carbs at race intensity for weeks in advance and your stomach adapts - it gets better at absorbing fuel under stress. That adaptation takes time. It does not happen in race week.

The athletes who blow up on the run often don't have a fitness problem. The body is capable of so much more. Typically it's a nutrition mistake - a fuelling plan tested for the first time on race day, on a stomach that has never seen that volume of carbohydrate at threshold pace.

By the time you hit race week, your race nutrition should be boring. Boring is really good. Boring means you've practised it so many times you're almost sick of it. Boring means safe.

HABIT 4: They protect their immune system

This is the habit that quietly takes more athletes out of their A-race than any fuelling mistake on course.

A head cold in taper week. One really bloody expensive training session - if you're lucky enough to make the start line at all.

Heavy endurance training is a physical stress. The research is clear that hard training temporarily suppresses your immune system and bumps up the risk of upper respiratory tract infections. Stack under-fuelling on top of that - training in a carbohydrate-depleted state - and you spike your stress hormones even higher, making the immune hit even worse.

Then add a poor night's sleep, work stress building before you leave, and a long-haul flight to your event. You have built the perfect setup to get sick at the worst possible moment.

Protecting your immune system in the final few weeks is straightforward: fuel properly, sleep well, manage life stress where you can, wash your hands and don't crash diet heading into your race. None of it is glamorous. All of it matters.

HABIT 5: They plan and practise their carb load

Carb loading is one of the most proven strategies in endurance sport. It is also one of the most consistently botched.

It is not a giant bowl of pasta the night before you race. That is not how glycogen works.

A proper carb load is a strategically planned, high-carbohydrate intake to maximise your muscle glycogen stores. There is a real number - specific to your physiology - mapped across your actual meals and snacks for the 24 to 48 hours before race day. It is not eat everything in sight. It is not suck back extra sports drink and hope for the best.

And it has to be practised, just like your race fuelling does. The first time you carb load should not be the day before your race - or you will be on the start line feeling full, bloated and probably a little bit grumpy instead of topped up and ready to go.

Carb loading is exactly the kind of nutrition strategy that needs to be individualised. Generic advice falls over for triathletes because the targets depend on your body weight, your event distance and your specific physiology. Working out those targets, then practising and refining them race after race, is a core part of what happens inside the Triathlon Nutrition Academy.

THE HABIT UNDERNEATH ALL OF IT

None of these five things is luck. All of it is habits and behaviours built over months - the same way your fitness is.

The athletes who get to enjoy race day are the ones who did the boring, consistent work long before they got there. Not the ones who had the best intentions in the final week.

If you want to build these habits properly - with specific targets, the right timing and a framework that holds up across a full Ironman build - get your name on the Triathlon Nutrition Academy waitlist at dietitianapproved.com/academy. You'll be the first to know when the next cohort starts.

STUDIES REFERENCED

Gunzer, W., Konrad, M., & Pail, E. (2012). Exercise-induced immunodepression in endurance athletes and nutritional intervention with carbohydrate, protein and fat: What is possible, what is not? Nutrients, 4(9), 1187-1212. https://doi.org/10.3390/nu4091187

Knowledge of carbohydrate requirements does not predict carbohydrate intake around competition in endurance athletes. PMC11451575. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11451575/

(2025). A review of carbohydrate supplementation approaches and strategies for optimising performance in elite long-distance endurance. Nutrients, 17(5), 918. https://doi.org/10.3390/nu17050918

Gatorade Sports Science Institute. Dietary carbohydrate and the endurance athlete: contemporary perspectives.