I had been following Peak Performance for some time, admiring the incredible results their clients were achieving. Having known Harry through cricket and my involvement in body transformation coaching, I was already impressed by his personal achievements. When I inquired about running coaching with Peak Performance, the decision to join was an easy one. From the initial onboarding process to the structured and clear weekly coaching plans, I have been nothing but impressed. My goals were not only to set clear race targets but also to receive detailed and specific training instructions, particularly regarding pacing and eifort levels. Through Harry's coaching, I have rediscovered my love for training, gained a deeper understanding of my body, and, most importantly, validated my progress by achieving personal bests in both of the key races we targeted.

Harry and the Peak Performance team genuinely care and are fully invested in their clients. I know I am in great hands as I continue to progress.

Having started coaching with Harry at the beginning of November, I'm amazed at how much progress I've made in such a short space of time! After my half marathon in October, I felt my progress had plateaued - but within just a few weeks, I could already recognise improvements. A true testament to Harry's coaching is my recent Hale 10k race - which I completed in 49 minutes. This is 6 minutes faster than my most recent 10k PB! While the results speak for themselves, I couldn't have executed this without Harry's knowledge and guidance. Every training session is tailored towards my ability - they're both challenging and enjoyable with progress being made week on week. The regular communication is also super helpful - Harry's always there to answer any questions, adjust any of my sessions where needed and generally offer support - and I always look forward to the weekly feedback that puts me in good stead for the week ahead! I can't wait to see how much more I can achieve under Harry's coaching and truly couldn't recommend him enough as a running coach!

Training for a triathlon is both physically and mentally demanding, but working with Liam and Peak has made the journey incredibly rewarding. Their deep knowledge of swimming, cycling, and running-combined with a personalised approach to training-has helped me improve in many ways. What sets Liam and Peak apart is their ability to balance motivation and discipline. They know when to push, when to adjust, and how to keep training both challenging and enjoyable. Their attention to detail, from technique refinement to race-day strategy, has been invaluable in my progress.

Since joining in Feb this year, Cal's coaching has turned my previous interest in running into an obsession. On top of Cal's unbelievable running knowledge, he has a fantastic ability to motivate me and push my ability every week. In turn l've achieved PB's in every race l've ran under Cal. Without doubt the best fitness/sporting decision I've ever made.

Training with Cal at Peak Performance has transformed my running journey. When I started, I was a novice who had never run a 10K or a 5K in under 30 minutes. Cal helped me set a goal to run a 10K in under 60 minutes, which I surpassed by completing it in 45 minutes. Now, I consistently run over 25k weekly. Cal's personalised coaching, deep knowledge, and unwavering support have been invaluable. He has helped me enter "the running sphere," regularly competing in races and building confidence to tackle the Frankfurt marathon. Cal's varied, challenging sessions keep training exciting, even six months in. He has created a supportive team of likeminded athletes, making me proud to be part of Peak Performance. I highly recommend Cal to any runner looking to elevate their training and achieve their goals. He is an outstanding coach dedicated to his athletes' success.

I've been working with Cal for over a year now, I started as an inconsistent runner looking to change my lifestyle. Working with Cal has been the single best decision I've made when it comes to my fitness and endurance. His knowledge and experience has helped me achieve things I never thought possible and instil a confidence in my ability I never had. The standout thing from working with Cal has been his ability to listen to what is working for me and tailoring sessions around environment, injuries or work. I would recommend Cal and PP to anyone who is looking to better themselves, surround themselves with a like minded community and achieve the impossible.

I’ve been with Coach Cal since January as I wanted to get a professional in to coach me for my first marathon. Cal's knowledge is second to none, he's incredible at motivating me and getting the very best out of me and his other athletes. Since joining PP my fitness has sky rocketed and I can do things on the tarmac I'd never dreamed of before coming under Cal's guidance. Sub 20 5k, sub 40 10k and two incredible marathon performances all meticulously built from Cal's programming.

Cal’s always there to break it down and go above and beyond to explain the programme for the week and answers any questions. I'd recommend Cal and PP to anybody, it's been a fantastic and rewarding decision for me to be apart of the pink and black team.

I would just like to say a big thank you to Liam Devlin, I have been working with Liam coming into 12 weeks now, he's been very supportive towards my training and has always been very responsive to any questions I have. I had two goals this year to get a 5km and a 10km PB.

I have managed to bring my 5km PB down from 25 minutes to 21:35 and my 10km PB down from 54:47 to 45:36. I’m really looking forward to continuing working with Liam as this journey is only getting started.

I've never been a runner, weight training was my regular training. However I wanted a ditferent challenge and decided to get some support. From day one Harry was so supportive from setting up my watch correctly to checking in on me during my first few weeks to make sure all was ok. I could message Harry anytime and I benefited massively with that extra support being a beginner. I hit a new PB and managed to do some pretty intense sessions but I really enjoyed challenging myself. I would 100% recommend investing in Peak Performance if you're serious about running.

Let me start off by saying, I am not one that felt or feels I can be coached. I am a free soul when it comes to running, but somehow, even living in a different country, Cal and I ended up working together and I couldn't be happier with the interaction and gaining a new friend across the pond.

With all the coaches available in the Seattle area and abundance of apps and videos, I was still intrigued by Cal's attitude towards running/training after crossing paths via Instagram.

Not only is he an incredible multi-sport athlete, he really has a positive and grounded approach towards training which stems from his wealth of knowledge and experiences.

It's easy to feel overwhelmed with the abundance of coaches available these days and not to mention there are a lot of "coaches" out there that are simply plugging in a formula and dropping times for workouts. Cal and Peak Performance are not that by any means. Cal offers tailored programs, training, and advice that comes with passion towards helping the athlete achieve their goals. I will be honest, I am a difficult person, I have a lot of questions and also frankly skeptical at times (this is my own doing), but he was able to explain his workouts, the process, and what we were aiming for in a way that is reassuring and supportive.

Cal is also patient, understanding, and truly just wants what is best for the athlete and their goals. Don't get me wrong though, this will include pushing you at times you may feel like you have nothing to give, but if you trust the process, lean into the unknown and communicate your feelings, he can help you achieve your goals and more.

Whether you are new to running, want to learn more about different types of training, or a seasoned athlete, Cal and Peak Performance are there to provide elite and supportive training. Take the next step and find out what you are capable of and you won't regret it.

Cal has been an incredible running coach, helping me achieve personal bests across all distances trom 5Ks to 100 miles. His personalised training plans, unwavering support, and expert guidance have transformed my running performance. I have been training with him for over a year, and when I was choosing a coach, it was crucial to have one who is inspiring based on their own actions, and Cal truly embodies this. Whether it's a trail ultra (Bob Graham Round), a fast SK, or an Ironman, he has done it all. Having a coach with these experiences is invaluable when training or competing, as he understands firsthand the challenges and strategies required for success.

This allows me the room and scope in the future to grow/change disciplines and take on new and different challenges while under Cal's coaching.

Cal's attention to detail, motivational coaching style, and deep understanding of the sport make him the ideal coach for runners of all levels. I couldn't have reached these milestones without his dedication and expertise.

Cal has been coaching me for around 18 months now and in that time I've seen significant improvements in not only my ability to run but also my knowledge in understanding the importance of having running variations incorporated in to my training to improve my overall performance. Cal will set running pace targets that more often than not I wouldn't set myself. He pushes me harder than I would necessarily push myself and keeps me accountable whilst doing so. I've gained confidence to take part in numerous races and will continue to do so as I never feel a need to not have peak performance as part of my routine!

It's an infinite investment to constantly better yourself and your performance.

Cal has been the best coach I could have ever asked for. A year ago, I would never have imagined myself running a marathon, let alone an ultra, yet here I am achieving things I once thought were impossible. Joining Peak Performance was without a doubt one of the best decisions I have made, and having Cal as my coach has made all the difference.

He is always available to answer my questions, guide me through challenges, and help me adapt when life gets in the way. No matter what type of race I sign up for, whether it is Hyrox, Wild Hybrid, half marathons etc - Cal tailors my training in a way that consistently pushes me beyond my comfort zone. There have been plenty of times when I looked at the week’s plan and thought, “There is no way I can get through that,” yet with his structure and encouragement, I have surprised myself again and again.

What really stands out is his depth of knowledge and how well he understands not just training, but recovery, mindset, and the bigger picture. Leading up to my ultra, I found myself doubting whether I could actually do it. Cal kept me accountable, gave me the confidence I needed, and pushed me just the right amount. His weekly feedback is invaluable, it is always honest, constructive, and motivating, which is exactly what makes him such an incredible coach.

I could not recommend Cal enough. If you want a coach who is supportive, knowledgeable, and genuinely invested in helping you reach your potential, Cal is the one.

I’ve worked with Liam for 12 months now and WOW the difference in my fitness and mindset from when I started is something I could not have done on my own. His belief, supportiveness and knowledge is second to none. The way everything is so personalised and tailored to suit your life as best it can be is exactly what I needed. He listens and adapts and is always there to answer questions, give advice and tips! The confidence Liam & peak have given me is something I never thought I would get back. I’m excited to keep building and seeing what we can achieve!