About us
Coaches who race themselves
At HYTX you're coached by people who are deep in the sport themselves. No theory from the sidelines, but people who train, race and live what they teach you. Together they form a team around every discipline: running, cycling, swimming, strength and nutrition.
The team
One team around your progress
From performance coaches with a medical background to swim coaches from competitive swimming and our own dietitian: every part of your training is in the hands of someone who does it themselves. HYTX is also an official club of Triatlon Vlaanderen.
The coaches
Who coaches you

Marvin Kleyn
Founder & head coach
Founder and driving force behind HYTX, specialised in triathlon and performance coaching. He coaches triathletes, duathletes, runners and cyclists.

Michiel Rypens
Running & triathlon coach
A triathlete himself, with a background as a physiotherapist and a sharp eye for performance. He coaches runners and triathletes from a medical and athletic perspective.
Anthony Verschuren
Triathlon coach
I combine data, theory and experience with good common sense. No quick fixes, but an approach that holds up. I'll soon earn my Trainer C Triathlon (VTS) diploma and I'm TrainingPeaks Level 1 certified. As an active triathlete across all distances, from sprint to full triathlon, I know the sport from the inside too.

Levin Van Uytven
Running coach
An ultra runner himself, he knows better than anyone what it takes to keep going over long distances. He focuses on runners and ultra runners.

Delphine Verbiest
Running coach
Running is my way to challenge myself and push my limits, from short distances to marathons and ultras in Greenland, Scotland and Morocco. As a running coach at HYTX I coach athletes in a personal way, with attention for their goals and their cycle. Together we build better performance, confidence and enjoyment.

Remy Verheyen
Running, ultra & cycling coach
Both an ultra runner and an ultra cyclist, with a feel for what the body can handle over long distances and across multiple disciplines.

Arturo Quiroz Marnef
Running coach & personal trainer · physiotherapist & dietitian
A passionate runner, personal trainer, and dual-trained as a physiotherapist and dietitian. At HYTX he turns that unique combination of knowledge into targeted strength training and running coaching with nutritional advice.

Elisa Kleyn
Dietitian
Studied nutrition and dietetics and helps runners, cyclists, triathletes and duathletes get their nutrition right.

Valérie Haberkorn
Sports massage therapist
Our sports massage therapist, who makes sure athletes start their next session recovered and fresh.

Mark Plas
Head swim coach
A teacher by training, an athlete at heart. Zwemfed instructor and qualified lifeguard, with a passion for open water swimming and technique as the basis for speed. At HYTX I turn that passion into coaching with structure and a dose of level-headedness.

Maxim Van Ginneken
Swim coach
I'm a former competitive swimmer at a high national level in Belgium and I now bring that experience as a coach, while also training actively as a triathlete myself. My approach is hands-on and practical: I always start by building your confidence in the water, because that's the key to real progress. I like a light-hearted atmosphere during sessions, because you simply learn more when you're relaxed and having fun.

Alfred Campenaerts
Swim coach
With a background in competitive swimming and active as a triathlete, Alfred combines technical swimming knowledge with practical experience in the pool and open water. As a swim coach he helps triathletes and swimmers further develop their technique, efficiency and confidence in the water.

Louve Bervoets
Swim coach
Comes from competitive swimming and brings that background to the pool, ready to adjust where needed.
Ready to start?
Let us coach you
Tell us where you are and what you want to achieve. We'll match you with the right coach and get in touch personally.
No obligations. We reply within a few days.