Whether you have taken up the sport of triathlon this year or have been embracing the ‘Tri Life’ for a couple of seasons, nailing your nutrition on a daily basis is key to optimising your training and racing performance.
Training for a triathlon is demanding, your nutrition needs to keep up with your passion for swimming, biking and running. Many beginners or those new to the sport follow a solid training programme but keep eating the way they always have, then wonder why they’re tired, slow to recover, or picking up niggling injuries.
The good news? A few simple habits go a long way to fuelling you all the way to the finish line of your chosen race.
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Don’t Accidentally Under Fuel
If you train hard but “eat normally,” you can still end up low on energy. Watch for: constant fatigue, poor sleep, irritability, frequent colds/injuries, sugar cravings, and stalled progress.
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Build Every Main Meal Around Carbs + Protein
Most triathletes do better when they include a carb source at most meals (rice, pasta, potatoes, oats, bread, fruit) and add protein regularly (eggs, yogurt, chicken, fish, tofu, beans).
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Match Carbs To Training
More carbs on hard/long days (intervals, bricks, long rides), slightly less on easier days, but don’t “diet” on rest days, you’re already tired or stressed your body needs fuel to function and more importantly to recover.
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Protein, Spread Across The Day
Aim to eat protein 3–5 times daily, roughly 20–30g per meal/snack for many athletes (more if you’re larger or training heavily).
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Don’t Start Key Sessions On An Empty Tank
Early training? Even a small carb snack can help (banana, toast, yogurt, sports drink). Harder/longer session? Eat a bit more beforehand.
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Eat A Real Recovery Meal Within A Couple Of Hours
After training, get carbs + protein soon-ish, especially if you have another session coming up. (A 3:1 or 4:1 carb-to-protein approach can work well after tough/long sessions.)
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Practice Fuelling During Long Workouts
Training isn’t the time to skip nutrition, fuelling during longer sessions improves performance and trains your gut for race day.
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Hydration: Personalise It
Hydration needs vary a lot, use training to learn what works for your sweat rate and conditions. For longer sessions/events, consider drinks with sodium (check labels).
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Keep High-Fat Meals Away From Hard Sessions
Fats are important for health, but did you know they digest slowly? Save higher-fat meals for times that won’t clash with intensity.
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Fix The Common Mistakes First
- Skipping breakfast → commit to a simple carb + protein breakfast most days
- Underfueling easy days → reduce carbs slightly, don’t crash your total intake
- Too little protein early → make breakfast protein-based
