Meet the Coaches

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Mike Trees - Head Coach

Mike Trees was a professional athlete for over 20 years, winning multiple international titles. He now works as a performance consultant, where he has offered his expertise in training and physiology to numerous Olympians and World Champions. He has a comprehensive knowledge of racing, training and coaching. He is happy to advise athletes of all ages and abilities,
whether you are looking to improve a personal best time or get to the Olympics, Mike can help you meet and exceed your goals and perform at your peak.



Coaching Achievements: 

  • Head Coach at NRG-Coaching

  • Previous manager of British and Japanese National Duathlon teams

  • Coaching experience of 25+ years

  • University Lecture of Sport Science

  • Coached Olympic Triathletes + World Record Holders


Sporting Achievements:

  • 7 times masters world champion 

  • British record holder for Ironman 1994 ( 8:52) 

  • Best ITU Duathlon World Ranking #2 

  • British University 1,500m Champion 

  • 9 times British and Japanese triathlon and Duathlon champion.

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Tommy Trees - Assistant Coach

Sports have been a central part of Tommy’s life for over 15 years. He competed for the Japanese National Triathlon Team on several occasions and has over a decade’s experience of training and competing at the highest level. Tommy has helped coach athletes of all abilities to victories, personal bests and achieving their goals.



Coaching Qualifications:

  • BSc University of Leeds

  • Ironman Certified Triathlon Coach

  • Level 3 Qualified Personal Trainer

  • Level 3 Qualified Sports Massage Therapist

  • 5+ Years of Coaching Experience



  • Head Coach of Puresport Run Club (Voted best Run Club in the World 2021)

  • 96% of Tommy's clients doing Marathons in 2021 got personal bests

  • Helped over 50 people complete their first marathon. 

  • Helped over 10 people complete their first Ironman.

  • Japanese National Triathlon Team: 2014-2016

  • Marathon: 2:39, Half Marathon: 1:14, 10K: 33:40, 5K: 15:40 

  • Completed Ultra Marathons 50 miles+


Becky Briggs - Assistant Coach

Becky Briggs is a British record holder and elite marathon runner who has competed for Great Britain over both the cross country and road. With over 12 years of experience in distance running, competing internationally on the track, cross country and road, Becky has first-hand experienced the rise from grass roots athletics to the elite level and shares this passion with helping others achieve their goals in the sport.


Coaching Qualifications:

  • BSc Sport and Exercise Nutrition- St Mary's University

  • Leadership in Running Fitness

  • Sports Leaders UK Level 2 award


Sporting Achievements:

  • European U23 Marathon Record Holder: 2:29:05

  • British U20 Half Marathon Record Holder

  • Manchester Marathon Winner

  • World Cross Country Championships 2019

  • World Half Marathon Championships 2020

  • Half Marathon- 1:12:54

  • 10km- 34:09

  • England International Vests 5km, 10km and Cross Country