Louis Osselaer
HYROX Elite 15 · Belgian Record Holder · 53:25 Pro
I've never been the naturally strong guy. I came from javelin, tried triathlon until injury stopped me, and spent years in CrossFit fighting for every kilo of strength. Endurance was my gift, strength I had to earn.
In 2022, I entered a HYROX race almost as a side project: one specific session a week, next to my regular CrossFit training. I qualified for the World Championships in Las Vegas and became age group world champion.
That result told me HYROX was my sport. It also fooled me.
Because when I went all-in and set my sights on Elite 15, talent stopped being enough. My running wasn't improving fast enough. I was carrying too much weight. I kept hitting walls.
What changed everything wasn't a new training plan, it was a new focus. I stopped chasing results and started obsessing over the process. I learned to read how my body responds to training. I picked one weakness at a time and worked on it for months. At one point I focused purely on running and dropped strength training completely. And I took full responsibility: if something wasn't working, that was on me. Which meant I could fix it.
Since then: no injuries, steady progress, the fastest HYROX time in Belgium — 53:25 — and racing at the Elite 15 level.
That's what I coach now. Not my talent, you can't buy that, and you don't need it. My process: structure, smart pacing, honest assessment, and one improvement at a time. So you can skip the years I spent figuring it out.
Louis Osselaer
HYROX Elite 15 · Belgian Record Holder · 53:25 Pro
I've never been the naturally strong guy. I came from javelin, tried triathlon until injury stopped me, and spent years in CrossFit fighting for every kilo of strength. Endurance was my gift, strength I had to earn.
In 2022, I entered a HYROX race almost as a side project: one specific session a week, next to my regular CrossFit training. I qualified for the World Championships in Las Vegas and became age group world champion.
That result told me HYROX was my sport. It also fooled me.
Because when I went all-in and set my sights on Elite 15, talent stopped being enough. My running wasn't improving fast enough. I was carrying too much weight. I kept hitting walls.
What changed everything wasn't a new training plan, it was a new focus. I stopped chasing results and started obsessing over the process. I learned to read how my body responds to training. I picked one weakness at a time and worked on it for months. At one point I focused purely on running and dropped strength training completely. And I took full responsibility: if something wasn't working, that was on me. Which meant I could fix it.
Since then: no injuries, steady progress, the fastest HYROX time in Belgium — 53:25 — and racing at the Elite 15 level.
That's what I coach now. Not my talent, you can't buy that, and you don't need it. My process: structure, smart pacing, honest assessment, and one improvement at a time. So you can skip the years I spent figuring it out.
Emile Mattheeuws
Emile has been passionate about sport and movement from a young age. Before entering fitness racing, he competed at a high level in Moto Trial, becoming a multiple-time Belgian and Dutch champion. Years of competing taught him discipline, patience, and the value of consistent work over long periods of time.
His coaching philosophy is built around accessibility, communication, and creating an environment where athletes feel supported throughout their journey. Emile believes that progress happens when athletes enjoy the process and build confidence through consistent training.
One of Emile’s biggest strengths as a coach is his ability to connect with people. He is approachable, empathetic, and genuinely invested in helping athletes move forward. Rather than simply delivering a training plan, he focuses on building a coaching relationship where athletes feel heard, supported, and motivated.
Emile works particularly well with beginner and intermediate athletes who are looking for guidance, accountability, and regular contact with their coach. Whether the goal is completing a first race, building confidence in training, or becoming more competitive, he enjoys helping athletes take the next step in their development.
His background in elite sport combined with his people-first coaching style makes him a coach who not only helps athletes improve performance, but also enjoy the journey that comes with it.
Emile Mattheeuws
Emile has been passionate about sport and movement from a young age. Before entering fitness racing, he competed at a high level in Moto Trial, becoming a multiple-time Belgian and Dutch champion. Years of competing taught him discipline, patience, and the value of consistent work over long periods of time.
His coaching philosophy is built around accessibility, communication, and creating an environment where athletes feel supported throughout their journey. Emile believes that progress happens when athletes enjoy the process and build confidence through consistent training.
One of Emile’s biggest strengths as a coach is his ability to connect with people. He is approachable, empathetic, and genuinely invested in helping athletes move forward. Rather than simply delivering a training plan, he focuses on building a coaching relationship where athletes feel heard, supported, and motivated.
Emile works particularly well with beginner and intermediate athletes who are looking for guidance, accountability, and regular contact with their coach. Whether the goal is completing a first race, building confidence in training, or becoming more competitive, he enjoys helping athletes take the next step in their development.
His background in elite sport combined with his people-first coaching style makes him a coach who not only helps athletes improve performance, but also enjoy the journey that comes with it.
Aaron Timmerman
Aaron combines a strong endurance background with a structured and analytical approach to coaching. Having spent years competing in running, from shorter races to marathons, he understands the value of consistency, patience, and long-term development.
His coaching philosophy is built around creating sustainable habits that support both performance and health. Aaron believes athletes improve most when training, recovery, nutrition, and lifestyle work together.
One of Aaron’s greatest strengths is helping athletes understand the reasoning behind their training. He enjoys creating clear structures, explaining the “why” behind the process, and helping athletes make confident decisions both in training and on race day.
Aaron works particularly well with athletes who appreciate structure, accountability, and a logical coaching approach. Whether you’re preparing for your first race or chasing a new personal best, his focus is on building sustainable progress that lasts.
Aaron Timmerman
Aaron combines a strong endurance background with a structured and analytical approach to coaching. Having spent years competing in running, from shorter races to marathons, he understands the value of consistency, patience, and long-term development.
His coaching philosophy is built around creating sustainable habits that support both performance and health. Aaron believes athletes improve most when training, recovery, nutrition, and lifestyle work together.
One of Aaron’s greatest strengths is helping athletes understand the reasoning behind their training. He enjoys creating clear structures, explaining the “why” behind the process, and helping athletes make confident decisions both in training and on race day.
Aaron works particularly well with athletes who appreciate structure, accountability, and a logical coaching approach. Whether you’re preparing for your first race or chasing a new personal best, his focus is on building sustainable progress that lasts.
