About James LeBaigue

Hi, I’m James LeBaigue.

I’m a SENR Registered Nutritionist with a Master’s degree in Sport and Exercise Nutrition, and I specialise in helping 70.3 and Ironman triathletes have their best-ever races.

I’m the founder of Nutrition Triathlon and creator of The Hub, a membership community designed specifically to help 70.3 and Ironman triathletes fuel their training, recover properly, and perform at the level they deserve to.

I’ve created one of the leading YouTube channels dedicated to triathlon nutrition, with over 2.5 million views. Through this, I share evidence-based guidance to help triathletes better understand how to fuel their training and racing.

My goal is simple: to help you understand exactly what your body needs to train, recover, and race with confidence.

“James has the rare ability to break down complex (and sometimes confusing) info and make it actionable. For the first time, I understood how to secure a safe sodium intake, how to carb load and eat in a way that doesn't upset my stomach, and how to conquer my races with energy.”

- Giovanni Angelo Tertulli

My background in healthcare and sports nutrition

Alongside my work in sports nutrition, I’ve spent over a decade working in healthcare within the NHS.

I began my career in the ambulance service as a Paramedic, before transitioning into General Practice, where I now work as an Advanced Clinical Practitioner with independent medicine prescribing rights. I was among the first paramedics in the UK to be granted this level of prescribing responsibility.

This clinical background shapes how I approach nutrition today. My work is grounded in physiology, evidence, and practical application — not trends, guesswork, or rigid rules that fall apart in the real world.

I later completed a Master’s degree in Sport and Exercise Nutrition and became a Registered Nutritionist on the Sport and Exercise Nutrition Register (SENR), part of the British Dietetic Association, which is the UK’s recognised professional register for qualified sports nutrition practitioners.

Why I specialise in 70.3 and Ironman triathlon nutrition

My focus on triathlon nutrition began after my own early racing experiences.

My first 70.3 taught me something brutal: fitness doesn’t matter if your nutrition falls apart.

Despite being physically prepared, my fueling didn’t support the demands of the race, and my performance deteriorated significantly as a result. That experience pushed me to properly understand the physiology of endurance nutrition and how to apply it in practice.

Since then, I’ve worked with hundreds of triathletes, from first-time 70.3 athletes to experienced age-group competitors and professionals, helping them build clear and reliable nutrition strategies.

Many athletes I work with come to me experiencing issues such as:

  • Energy fading late in long rides or runs

  • Uncertainty around carbohydrate, fluid, or sodium intake

  • Gut issues during training or racing

  • Difficulty losing weight without negatively affecting performance

  • Inconsistent recovery between sessions

In most cases, the problem isn’t motivation or training. It’s a lack of clear nutritional structure.

My work focuses on working with triathletes to improve three core areas:

  • Daily nutrition to support energy, recovery, and overall health

  • Training nutrition to improve session quality and adaptation

  • Race nutrition to maximise performance on race day

These form the foundation of the TriFuel Framework — a structured approach I created that helps triathletes fuel consistently and predictably across training and racing.

My mission

My mission is to help 70.3 and Ironman triathletes have their best-ever races by taking the guesswork out of nutrition.

When nutrition is properly aligned with training, everything becomes more predictable. Energy is more stable. Recovery improves. Race execution becomes clearer and more reliable.

Instead of second-guessing your fueling, you can focus on training well and performing at your best.

Everything I create is designed to help you do exactly that.

"James helped me understand everything so much better and brought me clarity.

Teaming up with James was such a great decision and the results have been fantastic."

- Damian Bush