Pinnacle Fitness isn't just a regular gym where you show up and work out--it's a true community. No matter your fitness level, you're welcomed like family. The support here is real, and everyone pushes each other to become better than they thought possible. Jeff, the owner, is incredibly dedicated and honest about what it takes to reach your goals. He'll tell you straight up how challenging the journey can be, but he's there every step of the way to help you succeed. Not only has he competed in events like Spartans, DEKA, and HYROX, but he's also coached others to excel in their own sports and competitions. If you couldn't already tell--I recommend Pinnacle Fitness 1000%. read more

Pinnacle Fitness - Cold plunge. It has now been replaced with a new one - Trainers Near Me - Fairfield, California

Me and a good friend were looking for a gym that would accommodate us for our event in Vegas . Camille and I came in with a good workout background, we're both getting ready to race a women's double hyrox in Feb 2026. I want to say we started at Jeff's gym around Oct/Nov 2025! And we've been training there a good number of times a week, averaging 2-5x a week. Let me tell you!! The intensity of the workouts are crazy. Going into training for a Hyrox, we were a bit blindsided. A lot of dynamics and endurance training really goes into this sort of event. The way our workouts are organized are phenomenal. This a more intermediate/advanced training facility, of course beginners are always welcome but I do have to say, get ready to get your butt kicked. In the little time that Jeff has been training/conditioning us, I feel quite confident coming into our Feb 2026 race! Not only is the training amazing, but the community is great as well! Everyone is very supportive and upbeat. So happy we stumbled upon this facility, if I could give them more than 5 stars I would! read more

Pinnacle Fitness - Trainers Near Me - Fairfield, California

I joined Pinnacle Fitness after another nearby gym I liked closed, and I'm honestly glad it led me here because this place is even better. The small group format is motivating, the space is spotless, and the equipment is all top notch. Coach Jeff is fantastic at pushing you while still keeping things safe and tailored to your level. Every workout felt professional, focused and effective. If you're looking for a great gym experience with real guidance and a supportive environment, Pinnacle Fitness is absolutely worth it. read more

If your looking to be successful in all your fitness goals, this is the place. The work is hard but the results are priceless. Jeff is an excellent trainer and he will work with you to maximize your workouts no matter what. I had a right shoulder problem for 18 years before working with Jeff and through his personalization of the workouts and my own dedication, my range of motion is back, the shoulder is virtually pain free and best of all, i was able to avoid a previously impending surgery. Be prepared because you will be held acountable, but that just makes each goal you achieve that much more rewarding. Stop making excuses and do yourself a favor, get in here and get in the best shape of your life. You won't regret it, I promise. read more

Jeff at Pinnacle fitness has really helped me up my fitness level. Over the past year I have increased my strength, mobility and speed. Jeff listens to your concerns and works with to achieve your goals, if you are ready to put in the work. FitRanX motivates you to "Level Up" and gives you something to look forward to. With Jeff's guidance I was able to lose over 15 pounds during our recent fitness challenge by exercise and meal preparation! If you are serious about improving your health, I highly recommend Jeff and Pinnacle Fitness! read more

Love this gym. Super awesome training environment where Coach Jeff creates a fun community of people that want to train hard, have fun, and just get AWESOME and REAL results. Love this gym!! read more

So I had my baby April 3, 2014 and I knew immediately after having my precious that I wanted to be more fit than I was pre-pregnancy and I knew a trainer could help me obtain my goal. Jeff is the BOMB.COM! No lie! He helped me to not only get into shape, but I am able to workout by myself on days that I didn't train with him. I am moving away and wont be able to work with him anymore but in 4-5 months he kicked my arse into shape! If youre looking for a trainer who is down to earth and who will work you hard, Jeff is the person see! read more

I started last September at Pinnacle fitness barely able to do 5 sit-ups and 3 push up and couldn't even tell you what a Burpee was! Desperate, scared, and loaded with past failures i put my faith in Jeff Greer! Cant thank Jeff enough!!! I am now up to easily knocking out 100 squats, 100 push-ups, and 250 sit ups in one day! Not to mention completing the Warrior challenge and getting me to Level 4 in FitRanX! No matter what your goals are Jeff can guide you there!!! read more

I have been going to Pinnacle Fitness for over a year. I'm stronger now than I have been in years. Jeff, the owner, is knowledgeable in many fitness areas including nutrition. I have never injured myself because Jeff makes safety and doing an exercise in the correct form a top priority. Every day is a new workout with lots of fun thrown in so there's never boredom from doing the same thing every day. I also really like the FitRanX ranking system -- google it. It's a measurement of what your fitness level is so there's always a goal to attain. Give Pinnacle a try, you won't regret it. it's the best decision i've made to get stronger and healthier. read more

Pinnacle Fitness has made a huge difference in my life. I was unfit and overweight and knew what I'd done in the past wasn't going to work. I spoke with the owner, Jeff Greer, and decided to start with a 6 week weight loss challenge and figured if I didn't like it, I only had to stay 6 weeks and I'd lose some weight in the process. I have just completed my 35th straight week! Not only have I lost weight, but I've also learned how to prepare menus and follow an eating plan for better health and performance. I have joined and quit a number of gyms, but never managed to find a place that I wanted to stick with for more than a few months. I think the the things that make Pinnacle Fitness different are: Accountability - you need to sign up and show up for scheduled sessions at Pinnacle Fitness, instead of dropping in (or not) at other gyms. Familiarity - at Pinnacle Fitness you are the focus and time is taken to get to know you, what your goals are, and what you want to achieve. Leveling Up - There are defined levels/ranks at Pinnacle Fitness that you can work towards. It's great to challenge yourself and have an outlined set of skills you need to complete in order to move up. Variability - Jeff always manages to come up with new and fun workouts, so it never gets stale. He also comes up with optional challenges for members so they can work towards a new goal. Assistance - Jeff is always available to offer assistance, insight, and guidance. He'll also alter exercises to accommodate your ability or an injury. He's done the work to educate himself on what he trains and your safety is of utmost importance to him. Camaraderie - at Pinnacle Fitness you will find a group of people that look for you at workouts, will encourage you, challenge you, and cheer you on. If you want results, this is the place to be. read more

Jeff is one of the most effective personal trainers you will ever meet! No nonsense. Lots of results!!! Thank you for being one of the best! read more

Jeff is the man! I worked with Jeff before I entered the police academy. Jeff got me physically fit and I lost over 30 lbs with his guidance. Jeff's knowledge of workout routines and nutrition is endless. Jeff cares about your well being and health. His prices are dirt cheap compared to other personal trainers. I highly recommend Jeff. Weather you want to lose weight, maintain or increase your fitness level and strength, or just be healthy, Jeff will get you there guaranteed!!!!!!! read more

Working out at Pinnacle has been great. This is my third time participating in one of the challenges and all I can say is wow. Each time I do this I find out another level I am capable of. Last year I completed 4 spartan races and got my trifecta. This year my plan is to do at least 9 races and get my triple trifecta and honestly I am not sure I could have gotten here without Jeff and the support I get at Pinnacle. I consider the trainer Jeff a friend as he is always honest about where you are and where you could be which is hard to find in trainers now a days. During the challenge I learned about meal prep, supplements, I even got my wife to sign up and now she is training with me. Honestly I couldn't be happier with this gym. If your looking for a place that will push your limits, give you goals, teach you about good foods vs bad ones, and teach you about supplements. This is the spot. read more