Meet the Coaches
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Paul Elsey
Paul is a highly experienced triathlon coach with a passion for helping athletes achieve more than they thought possible. Whether you’re preparing for your first sprint triathlon or targeting qualification for a World Championship event, Paul combines technical expertise, proven coaching methods and genuine athlete care to guide you towards your goals.
With over seven years of coaching experience, Paul specialises in multi-sport performance coaching and endurance swimming, supporting athletes across all triathlon distances from Super Sprint to Ironman.
Coaching Qualifications
British Triathlon High Performance Coach
Level 2 Swim Teacher
Triathlon Strength & Conditioning Coach
Level 3 Sports Massage Therapist
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Catherine Horsfall
Catherine is a British Triathlon Personal Coach with a passion for helping athletes build confidence, consistency and resilience in triathlon. Whether you’re preparing for your first race, stepping up to middle-distance racing or working towards an Ironman finish line, Catherine combines structured coaching, personal experience and genuine athlete support to help you achieve your goals.
Drawing on a lifelong sporting background and her own journey back into swimming and triathlon, Catherine understands the realities of balancing training around work, family and everyday commitments. Her coaching focuses on creating sustainable, enjoyable training programmes that help athletes make steady progress while developing the confidence to achieve more than they thought possible.
Coaching Qualifications
British Triathlon Personal Coach
British Triathlon Group Coach
British Triathlon Foundation Coach
British Triathlon Strength & Conditioning Coach
Safeguarding Certified
DBS Checked
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Karen Carless
Karen is a British Triathlon Group Coach, England Athletics Running Coach, and Certified Menopause Coach with a passion for helping athletes discover what they are capable of, regardless of their starting point.
Whether you’re taking your first steps into running or triathlon, returning after injury, or working towards ambitious personal goals, Karen combines practical coaching expertise, personal experience, and genuine encouragement to help athletes build confidence, consistency, and resilience.
As a Team GB Age Group athlete and lifelong learner, Karen understands that progress is rarely a straight line. Her coaching focuses on developing sustainable habits, improving movement, and helping athletes trust the process through both the successes and the setbacks.
Karen believes that everyone deserves to feel welcome in sport and that performance and kindness can go hand in hand. She is currently working towards her England Athletics Endurance Coach qualification, continuing to expand her knowledge to better support athletes of all abilities.
Qualifications
British Triathlon Group Coach
England Athletics Group Running Coach
Certified Menopause Coach
Level 2 Personal Trainer
DBS Checked
Safeguarding Certified
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Niall Brady
Niall is a British Triathlon Group Coach with over 15 years of coaching experience across a variety of sports. Drawing on his extensive coaching background and strong understanding of sports science, he is passionate about helping athletes build confidence, improve performance and enjoy the training process.
Having discovered triathlon during the Covid pandemic, Niall understands the challenges of starting out in the sport and particularly enjoys supporting beginners as they prepare for their first races and develop confidence in training. His coaching philosophy is simple: coach the person, not just the athlete.
Whether you’re taking on your first triathlon or chasing a new personal best, Niall brings enthusiasm, experience and a supportive coaching style to help athletes of all abilities achieve their goals.
Coaching Qualifications
British Triathlon Group Coach
Coaching qualifications in Cricket, Trampolining and Rugby League
DBS Checked
15+ Years Coaching Experience
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Mark Booth
Mark is a highly experienced endurance athlete and coach who is passionate about helping people enjoy sport, build confidence and achieve goals they once thought were out of reach. With a coaching philosophy centred around enjoyment, inclusivity and long-term development, Mark supports athletes of all ages and abilities on their journey.
Having competed in triathlon and multisport for over 14 years, Mark brings a wealth of experience across a wide range of disciplines, from Super Sprint triathlons through to Ironman, as well as duathlon, aquathlon, marathon running, cycling and open water swimming events. His personal achievements include representing Great Britain at Age Group level in triathlon, duathlon and aquathlon since 2019, competing at the Ironman 70.3 World Championships, and qualifying for the Boston Marathon.
Alongside his endurance sport background, Mark is a strong advocate for strength, mobility and stability training, helping athletes improve performance, reduce injury risk and maintain longevity in both sport and everyday life.
Qualifications & Certifications
British Triathlon Group Coach
Level 3 Specialist Personal Trainer
Level 2 Fitness Instructor
British Triathlon Safely Coaching Static Bike Sessions
UKAD Coach Clean
Safeguarding Adults
DBS Checked
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Greg Gentleman
Greg is a passionate and approachable coach who is committed to helping athletes build confidence, develop their skills and enjoy the journey of endurance sport. With a coaching philosophy centred around consistency, sustainability and long-term progress, Greg supports athletes in balancing training alongside careers, family life and other commitments.
With a lifelong sporting background, Greg originally competed in combat sports, representing England internationally from a young age. More recently, he discovered endurance sport and quickly became hooked on the freedom, challenge and strong sense of community that it offers.
Having joined Trilab Racing in 2024 to improve his swimming, Greg’s journey from athlete to coach is a true full-circle moment and reflects the supportive environment that makes the club so special. He particularly enjoys working with newer athletes, drawing on his own experiences to help them navigate the challenges of learning new skills and building confidence in training and racing.
Greg believes that consistency beats perfection, focusing on building sustainable habits, trusting the process and finding an approach to training that works for each individual athlete.
Qualifications & Certifications
British Triathlon Group Coach
Level 2 Personal Trainer
BSc Sport, Physical Activity and Health
Safeguarding Certified
DBS Checked