- Brussels· ±30km
Availability: Monday mornings and Wednesday afternoons.
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Brussels, BE
Open to new requests
Data-driven endurance coaching for triathletes and swimmers in Brussels.
I provide the structure and support you need to reach your endurance goals. Together, we will build a training plan that balances your performance targets with consistent, measurable progress.
I coach athletes in Brussels with a focus on data-driven structure. Whether you are taking your first steps into triathlon or training for long-distance swimming goals, I provide the tailored plans required to keep you moving forward.
My process centers on weekly follow-ups to track your performance and refine your training. In addition to individual sessions, I offer strength training and nutrition planning to fully support your workload and recovery.
I believe in the power of collective training and offer group sessions on demand for those who thrive in a team environment. My goal is to ensure you have the personalized attention needed to stay consistent and perform at your best.

Clear options, format, and pricing so you can judge fit before you write.
After the initial six weeks, follow up with another four weeks plan.
Duration
Six weeks.
Format
1-on-1
Price
100€/week
A structured training plan delivered weekly to track your progress and provide adjustments based on your performance.
Duration
1 week
Format
1-on-1 · remote
Price
Price on request
Technique breakdowns and clips shared by Josh.
youtubeWelcome to the first episode of my new series. Sharing all the insights from my road to the European Championships 🏁 The journey is not always a straight line. It actually starts with an injury that kept me away from the track for quite some weeks.
Watch on youtubeStructured ways to work with Josh, with the shape and next step clear.
A clear first step for people who want structure, confidence, and steady support before they move into harder work.
A clear first step for people who want structure, confidence, and steady support before they move into harder work.
Athlete testimonials from people who have worked with Josh.
“Grégory was the best coach ever. He helped me beat my personal record on an Ironman.”
“I found Irena though a friend who recommended her to me: I was looking for help with what felt like untangling my brain. Specifically, I needed to get a clear idea of where to go next professionally, clarify what I really wanted and needed, and determine what steps to take to get there. Over the time of a few sessions, using surprisingly simple and intuitive tools, I reached my objectives very quickly. Irena has a truly holistic approach, effortlessly switching from focusing on well-being, to looking at concrete planning for instance, adapting to your needs and your character as needed to achieve your goals. Aside from the efficacy of her work, I've found Irena to be incredibly kind, empathetic, and fun to be around. I'm planning on seeing her still once in a while as a kind of "upkeep" of the work done. Long story short: would recommend 100%.”
“I worked with Irena over the past three months to navigate various aspects of my life where I felt lost. From our very first meeting, I felt a strong connection with her, and throughout this journey, I have deeply appreciated her kind, non-judgmental, honest and empathetic approach to our discussions. Trough our conversations, I have gained a deeper understanding of myself and my behavioural patterns, and she has equipped me with tools and perspectives that allow me to move towards patterns and habits that support my well-being. I would definitely recommend Irena’s services and I hope to get the chance to work with her again in the future.”
“I had the privilege of working with Irena as my holistic life coach over the past couple of months and from the very first session, Irena created an environment that felt warm, inviting, and, most importantly, safe. Throughout our sessions, Irena guided me in my personal growth, addressing not only my immediate concerns but also delving into the underlying factors influencing my life. What sets Irena apart is her genuine commitment to her clients' well-being. She tailored our sessions to meet my specific needs, incorporating a range of techniques and strategies that resonated with me personally. I would recommend Irena to anyone seeking change and doesn't know where to start!”
A simple path from first contact to a plan you can actually follow.
Goals, background, constraints, and whether the fit is real.
A practical look at your current level, movement, schedule, or material.
A clear starting plan with the workload, format, and next review point.
Adjust based on progress, fatigue, questions, and what happens in real life.
This is Josh's availability by location. Exact time, place, and format can change, so send a request with the slot that fits.
Availability: Monday mornings and Wednesday afternoons.
Education, certification, and experience behind the coaching.
Brands and platforms I use and trust in my own training and with the athletes I coach.
Featured in
Mentions and appearances.
Coaching works better when details, feedback, and questions are easy to say plainly.
I coach athletes in Brussels with a data-driven approach. My programs are suitable for anyone from those just starting out to athletes with specific performance goals in triathlon or long-distance swimming.
After our initial six-week program, we transition into a follow-up four-week plan. This ensures your development remains consistent and we continue to track your performance for necessary adjustments.
Yes, I offer group training on demand for athletes looking for a collective environment in addition to my one-on-one sessions.
Useful blogs and updates from Josh.

Understanding the value of data-driven guidance for those taking their first steps in training.
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The first call is free and usually decides everything. Pick a time, tell me what you want, we'll go from there.
Tell Josh what you're looking for. They'll reply from Coloseos, and you'll get it by email.
Social profiles
Places where Josh shares public updates, training notes, and day-to-day work.