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About Us

Endura prep About

Lawrence Cronk BSc

Head Coach

Lawrence is an endurance enthusiast with a passion for sharing his knowledge and experience to help others. At a young age he started playing cricket which lead to playing for Wales youth teams and joining the MCC Universities Centre of Excellence in Cardiff. A fitness test during cricket selection sparked an interest in pushing his limits and the endurance journey began. He later left his finance job and become a personal trainer. Career development lead him into managing gyms, fitness testing athletes, swim coaching and ultimately full time endurance coaching. At the same time competing and challenging himself in swim, bike and run events. Lawrence currently lives in Slovenia and has coached athletes in the UK, Europe, Australia, USA and The Middle East . His sporting achievements include: 

  • Great Britain Age Group representation at European & World Championships for Long Distance Triathlon. 
  • Multiple Ironman finishes. 
  • Multiple middle and long distance triathlon podium finishes. 
  • ÖtillÖ SwimRun World Championships qualification with wife Laura.  
  • Multiple ultra-marathon finishes including a 5 day run across Iceland. 
  • 3 Man non-stop relay cycle across the USA. 
  • Non-stop 26 hour gravel ride across Wales.  
  • Haute Route Dolomites 5 day stage race. 

Qualifications include: 

  • Ironman Certified Coach
  • Training Peaks Accredited Coach
  • Swimming Teacher
  • Personal Training 
  • British Cycling Level 3 Guide
  • First Aid

Get in touch

Online Coaching

Craig Burrows

Performance Testing & Coaching

Craig’s lifelong passion for sport has seen him complete multiple Ironman, Marathons, Time Trial and Ultra Cycling Events. His thirst for knowledge and strong belief in a pragmatic, data driven approach to training ensures he is always challenging himself as both a coach and an athlete. Craig carries out our VO2 max and metabolic rate testing in South Wales aswell as remotely coaching athletes around the UK. His sporting achievements include: 

  • Multiple Ironman finishes.
  • Multiple middle distance triathlon podium finishes. 
  • South to North Wales cycling record holder.  
  • Multiple London marathon finishes
  • Great Britain Age Group qualification at European middle distance triathlon. 

Laura Cronk

Nutritionist (ANutr)

Having worked in the environmental sector for ten years Laura decided to retrain and follow her passion in public health and food! Laura achieved a first class honours degree in Nutrition at Cardiff Metropolitan University. Unlike a lot of nutrition courses out there this degree is accredited by the Association for Nutrition which means Laura is able to offer scientifically evidenced advice. No diet fads, just recommendations for healthy eating habits that promote long term good health. 

Enduraprep Nathan Thomas Abloc Physio

Nathan Thomas

Physio Therapist

He is currently physiotherapist for Team INEOS, a position he has held for the last seven seasons travelling extensively throughout the world, including many successes not to mention, being involved in back-to-back Tour de France victories, as well as the Giro Italia and Vuelta Espana victories for the team.
Nathan holds postgraduate qualifications in sports physiotherapy, a physiotherapy degree with honours and holds a sports science degree.
He has worked in the front line of elite performance and injury management from pitch side trauma management, injury prevention, recovery and return to sport.