I've been training with Nicholas Marion for 12 years now, and he cracked the code on my overall health and well-being. I trained with him for 12 years in San Diego, 2-3 days a week, and now, after relocating, he transitioned me to his remote training program, which has been a game-changer for remaining consistent and staying strong. There are many personal trainers out there, but Nick stands apart. Very few, if any, understand how to train adults over 40 in a sustainable, injury-free, and effective manner. Nick is a rare exception. He is SO much more than a trainer--he's a life coach, teacher, friend, and trustworthy partner in your health journey. If you're looking to build strength, train for a race, recover from injury, maximize long-term health, or feel better in your body (or your clothes), Nick knows how to adjust the plan for the right approach. When I first came to Nick, I was recovering from a knee injury after running 3 to 5 miles six days a week for years. I was not out of shape, but I was also not strong in a way that supported my joints or facilitated long-term performance. Nick changed that. He understands biomechanics, injury prevention, recovery, strength training, and nutrition--and he's exceptionally skilled at implementing fitness into people in their 40s, 50s, and beyond. Nick's training style is straightforward, positive, and precise. If your technique is incorrect, he'll correct you. If your expectations are inaccurate, he'll inform you. He's serious about what he does, but is not one of those egotistical trainers you dread working with. Each session is innovative, challenging, and never the same. 12 years and counting, and I'm still learning, progressing, and looking forward to each session (even remotely). Plus, he is very personable. He doesn't talk down to you or bring his ego into the workout; instead, he builds you up because he genuinely cares about you. Nick genuinely cares about his clients and brings a deep level of expertise to every session. I'm healthier, stronger, and more confident thanks to his coaching--and I'm privileged to call him my coach and friend. If you're over 40 and in the process of shopping for a San Diego or online personal trainer who knows how to create long-term strength and durability, Nick's your guy. read more

I've been working with Marion for almost 8 years. He's an amazing personal training and knowledgeable in his field beyond belief. He has not only helped me but has taught me so much about fitness to carry it on beyond his sessions. He's so professional and inspiring. This man is still running marathons and triathlons! You will not be disappointed in the slightest, he worth his weight in gold! read more

I've known Nick Marion for nearly a decade now, and to say he's just a fitness coach would be a massive understatement. He's been a mentor, motivator, and a constant presence through some of the darkest times in my life. Even when I wasn't actively training with him, he still checked in, still offered support, and still reminded me of my strength when I'd forgotten it myself. He doesn't just coach bodies ,he coaches people. He knows when to push, when to pull back, and somehow always knows exactly what to say to get your fire lit again. There's no ego, no fluff, just real passion, real care, and a relentless drive to help people become their best selves. If you're looking for someone who won't just transform your fitness, but who will help you rediscover your own resilience , Nick is the one. I'm beyond grateful for the role he's played in my journey, and I can't recommend him enough. read more

Nick is an amazing personal trainer. He is kind and patient and works very effectively with all fitness levels. I felt extremely comfortable working with him and learning the best weights and work out routine for my needs and my goals. Nick really personalizes the program for everyone and I highly recommend him. read more

Nick was a crucial part of my fitness journey. Many years ago, I started taking his group training classes. I truly believe Nick is the reason I remain motivated and enjoy working out after all these years. He helped me understand the importance of incorporating strength training in my workouts. Not only that, he has a natural talent in his ability to train in a way that is comfortable but also challenging. He also educated me along the way so I'm now able to work out confidently on my own. I would highly recommend Nick to anyone who is looking for a trainer. Especially women/mothers over 40! Lindsay V 5/28/25 read more

I am a senior citizen, 91 to be exact. I have been with Nick Marion for 5 years now. I attribute my good health, my positive attitude and my ongoing motivation due to Nick's training and friendship. Coming from a high powered lifestyle, I feel blessed to have found Nick to lead me in my positive aging process, with strength and motivation. Thank you Nick ! read more

Fitness has always been a major part of my life - never tried to be an elite athlete, but loved a daily workout and staying in shape. Motivation to workout had also never been an issue until a few months ago at which time I grew bored of my routine - I felt like I had no energy and a growing waistline to match! All things changed when I started working out with Nick. Nick is passionate about health and fitness and you can tell. He is both kind, but also takes no excuses. He is knowledgeable and experienced - I have seen him train all levels and ages. He has reenergized my passion for fitness - making it fun again. Not to mention, within weeks I already lost the stubborn muffin top I've been complaining about for months. He understands diet, weight loss, weight gain - crafting plans on how to help you meet your goals. Besides being a good trainer, he is also a good human being. A trait that can be hard to come by. Hands down, Nick is the trainer to go to in San Diego if you are stuck in a rut, or havent even started at all. He is also quite easy on the eyes (always a benefit and motivation) read more

What else can I say about working and training with Nick as my coach and trainer? I just completed my first fitness competition and I placed first in both open and novice categories. Nick was extremely detailed and knowledgeable in working with me on my nutrition, workouts and overall preparation. He planned out from the start date of the show all the way to when I was finally committed to doing it. He was encouragable throughout the whole process and I don't think I could of done it without his help and overall knowledge in fitness. read more

I've gone through a number of trainers over the years and there is no one better than Nick. He's been training me for over a year and a half now and the results have been incredible. He's consistent, always on time and flexible with his schedule. He's there every morning, pushing you to your limits. He tracks your progress, creates customized meal plans, sends you nutrition guides, and he'll guide you each step of the way. Plus he'll blow you away with his knowledge of bio, chem and kinesiology. Where did this guy go to school? Oh that's right, UCSD. read more

I've had thousands of hours in the gym and been motivated by many great trainers. That said, I have to say without hesitation Nick Marion is the best. I have told Nick my goals with nutrition, supplementation, strength conditioning, men's physique competitions, physical injuries, and my wanting to be pushed beyond what I think I can do. Taken all of that into consideration Nick has consistently pushed me every week with changing up each workout to keep it new and challenging. Implemented new nutrition into my daily regiment with the science behind the plan and explanation as to how my body would react. Nick also has a background in preparing for bodybuilding competitions that has helped me practice posing and stage presence in front of hundreds of people. Also a real understanding on the use of supplementation and critical need of a clean diet plan. My great results of 2nd place is a testament to the professionalism Nick takes for his chosen career. I HIGHLY RECOMMEND Nick if you are serious about your goals and the goals you may not even be aware of. Thank You Nick Sincerely, Kevin "KevCo" Smith read more

Nick Marion is a training and nutrition savant. He has the ability to quickly ascertain what is best for his clients, set attainable goals, and create a plan that gets you to them. Put simply, if you don't reach your potential under Nick Marion, go look in a mirror... read more

Nick marion is the guru of fitness. He has an innate ability to focus on people's individual needs in regards to fitness and tailor a customized routine specifically designed for that individual....i would recommend him to anyone looking to lose weight, maintain a healthy lifestyle, or extend life expectancy. read more

I have a vast amount of experience in the fitness industry as a seasoned fitness and Pilates instructor. Nick is a very knowledgeable trainer and cares about your personal goals as well as any physical limitations you may have. He will balance both your fitness goals as well as nutrition, and Nick lives the life so he knows from personal experience. read more

My employer is a client of Nick Marion Fitness. She has seen a huge turnaround in overall health, strength and physique. Her comments regarding Nick, " I am one of Nick's oldest clients , in Rancho Santa Fe, and can't believe how he has lead me into such wonderful physical shape! He is a gentleman and a professional. I recommend him highly ." read more

Nick is an awesome trainer. He truly caters to your needs and helps you achieve your goals. He is a pleasure to work with and is able to motivate without over doing it. The nutrition knowledge is very helpful too. I recommend him to anyone at any level in any stage. read more

Thank you so much Nick for motivating me all the time to physically challenge myself beyond what I always think I can do, You have successfully etched in my brain the importance of exercise and nutrition, And your so funny as well, I love that my life has changed for the better... read more

Nick is the best trainer I've ever had. I've had a few over the years. But what makes Nick exceptional is his knowledge base. He trains the trainers. Like no other he has a passion for what he does. His approach is wholistic including nutrition. At 65 I have my medical issues which he is careful about. But The best part is seeing and feeling results...the icing on the cake! read more

Nick is a fantastic trainer. I've been a client of his since 09/2013 and have nothing but positive things to say about him. When we first started working together he laid out a whole exercise and diet plan for me and I started seeing results quickly. As he continued training me he would personalize the exercise and diet plan to fit my schedule and he worked with me to devise methods to achieve the best results. He's super knowledgeable, accommodating, and is definitely the best trainer I have ever had. read more

I am an 89 year old woman, and with Nick's help, I feel and act 20 years younger ! Thank you Nick !

I can confidentially say Nick is the best trainer I've had. He motivates you and pushes you to do things you didn't know were possible. I told him my goals and he helped me reach them. I am in the best shape of my life and have never been more confident thanks to Nick! read more

I have been an athlete for over 15 years, competing both nationally and internationally. Then I started working and I had to slow down my sport activity. When I met Nick, I was suffering really bad of lower back pain and sciatica. I had two disks impacted and most of my daily activities like driving or even just sitting on a chair would give me pain. I told Nick about my problem and he understood how to help me right away. We first started with strengthening my core muscles and improve my flexibility. In just a couple of months, my flexibility increased so significantly that I could finally touch my toes again. The intensity and frequency of the pain were almost zero. Once I started feeling better, I told Nick that I also wanted to get back in shape and build some muscles. He created a workout plan tailored around me and my schedule and he also taught me what to eat, when to eat and how much to eat. That was a great learning experience for me as it always struggled to build up lean weight. Now, after 12 months of working out with Nick, my back problem is only a bad experience in the past, I can do any exercise, lift heavy weights, and for the first time in my life I have been able to achieve my target weight by building up over 12 lbs of lean muscles. Nick knows how to help you achieving your goals and he walks with you day by day. He really cares about his clients and makes sure you stay focused and on track with your target. Furthermore, Nick is really a great guy and a good man. I totally recommend him! read more

Five stars doesn't even come close to how extraordinary Nick is as a person and as a trainer. When I decided to train with Nick I did not come from an extremely athletic background and I was not looking to hit any major weight-loss, competition or even aesthetic goals - simply, my health and long-term fitness are important to me and I wanted to have an expert guide for efficiency and accountability. Nick understood my objectives and created unique, evolving and engaging sessions. From every angle that you can look at it, my training with Nick was beyond successful: results-driven, motivational, energizing, full of discovery, and healthy both physically and mentally. I can easily say that having to stop training with Nick was the most difficult part of my decision to move away from San Diego. If you are ready to put health and wellness as a priority in your life, pick up the phone right now and schedule your first session with Nick. You will not regret it! read more