ABTA BONDED · FULL FINANCIAL PROTECTIONABTA BONDED · FULL FINANCIAL PROTECTIONTriathlon training makes real demands on your energy system across three disciplines, and getting your fuel right is as much a part of training as the sessions themselves. Here’s how to approach it.
Carbohydrates are your primary fuel across all three disciplines, protein supports muscle repair, and fats support sustained endurance. You don’t need to overhaul your diet dramatically — you need a consistent balance of all three, adjusted upward as your training volume increases.
Aim for a balanced meal with complex carbohydrates, lean protein and a moderate amount of healthy fat, eaten two to three hours before a session where possible. If you’re short on time, a smaller, easily digestible snack works better than skipping food altogether.
Dehydration is one of the fastest routes to a poor session — it increases fatigue and cramping risk well before you’d expect it to. Drink consistently through the day, not just during training, and add electrolytes for longer or hotter sessions.
For extended bike or run sessions, easily digestible options — energy gels, sports drinks, or whole foods like bananas — help maintain energy levels. Test different options in training, not on race day, so you know what your stomach actually tolerates under effort.
A combination of carbohydrate and protein within thirty to sixty minutes of finishing kickstarts muscle repair and glycogen replenishment. A protein shake, a balanced meal, or a snack with roughly a 3:1 or 4:1 carb-to-protein ratio all work well — the important part is timing, not perfection.
This is where a coached camp genuinely helps: you’re not left to plan every meal around a heavy training schedule yourself. SunTri’s camp includes half-board accommodation with a large breakfast buffet and a proper evening meal, built around Mediterranean staples — grilled fish, hearty paella, fresh fruit and vegetables — designed to support the volume of training you’re doing that week, not just to be a nice hotel dinner. It’s one less thing to think about during a week where your energy is better spent on the sessions themselves.
Curious what a fully fuelled training week actually looks like? Take a look at our spring triathlon training camp, or read the full training camp guide for everything else included.
