Brutal Events Swim Start


It was the summer of 2012 and the Olympics had come to London. Already a keen runner I watched in awe as the best athletes from all over the world competed in various sports for the ultimate prize of a gold medal. One event in particular stood out... the triathlon.

I was inspired and that’s where my journey began.


Just a few weeks later, I purchased my first road bike and began swimming at my local pool with the intention of completing my first triathlon the next year… Fast forward to the current time and I have now completed numerous triathlons over various distances including Ironman and Double Extreme Ironman. I have also represented Team GB at World and European Age Group level.


In order to improve my own performances I researched and studied various training methods and programmes already in existence and have gone on to build my own extensive training library. Since beginning my coaching journey with my local club Havering Tri, I have developed both as a coach and as an athlete. In 2018 was appointed Head Run Coach. I am passionate about coaching and strongly believe in a personal and bespoke approach for all of the athletes I coach.

With a young family and full time job, I understand the pressures involved with work, family and social commitments. Therefore, I will develop a time efficient plan which fits around your personal circumstance taking these factors into account. This plan will focus on ‘quality over quantity’ and look to make the most out of every session.

Jon Warren 4 performance coach


  • Level 2 Diploma British Triathlon Federation Coach

  • Training Peaks Level 1 Certified.

  • UK Anti-Doping (UKAD) Accredited Advisor UK Anti-Doping (UKAD)

  • Clean Coach qualifications.


  • 2019 The Brutal Extreme Double Iron Triathlon 2nd place.

  • 2018 The Brutal Extreme Double Iron Triathlon 3rd place.

  • 2018 The World Duathlon Championships 10th in age group, 35-39.

  • 2018 The Lakesman Long Course Triathlon 10th place.

  • 2018 The Midnight Man Half Distance Triathlon 5th place.

  • 2018 Outlaw Long Course Triathlon Relay 3rd place.

  • 2018 The Maidstone Duathlon 4th place, age group winner.

  • 2017 The Frinton on Sea Half Marathon 1st place.

  • 2016 The Bridge Autumn Duathlon 1st place.

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