Customers describe the facility as clean, organized, and welcoming, with a small group setting that minimizes distractions. Trainers are noted for providing personalized strength training programs, explaining proper form, and accommodating specific goals or injuries without applying sales pressure. Reviewers highlight the professional, encouraging atmosphere and the effectiveness of the workouts in building consistency and strength. No common criticisms appear in the provided five-star excerpts.
Google rating: 5.0 out of 5 from 218 reviews (97% five-star).
Reviews on this page: 218 Google reviews (196 with written comments, 3 with photos).
Owner responses: the business replied to 60% of reviews.
I’ve been active my whole life and have tried a variety of group fitness classes, but as I get older, I really wanted to focus more on strength training. I just didn’t feel confident walking into a big-box gym and knowing what to do or how to get the most out of my workouts.
I started at Underground Fitness about 3 months ago, and I absolutely love it! It’s small, super down-to-earth, and incredibly personalized to help you achieve your goals. The trainers are fantastic, supportive, and truly know their stuff. They’ve got the whole process down to a science, and you can tell there’s a lot of thought and expertise behind what they do.
Whether you’re just starting your fitness journey or have been active for years and want to take things to the next level, I can’t recommend Underground Fitness enough. 10/10!
Services: Personal training
Response from the owner · 4 weeks ago
Johanna, thank you so much for the amazing review and for choosing Underground Fitness. We are thrilled our small, down-to-earth, personalized approach and our trainers have helped you feel confident and progress with strength training. Your 10/10 recommendation means a lot to the whole team. We look forward to supporting your continued journey.
Noelia Sepulveda3 reviewsiTotal number of Google reviews Noelia has written across all businesses on Google Maps, not just this one.
Wow, I just had to share! ❤️
My husband and I started this new journey to prioritize our health, and joining this gym has been such a great experience.
Our trainer, Lee, is absolutely amazing! He is kind, patient, and always takes the time to explain what to do and how to do it correctly without ever making us feel pressured.
When you’re just starting out, having a trainer like Lee makes all the difference. We truly recommend this gym, especially if you’re looking for a welcoming and supportive place to begin your fitness journey! 💪❤️
Price assessment: Reasonable price
Services: Personal training
Response from the owner · a month ago
Noelia, muchas gracias por compartir tu experiencia y por recomendarnos. Nos alegra saber que tú y tu esposo se sienten bienvenidos y que Lee ha hecho la diferencia con su paciencia y sus explicaciones. Comentarios como el tuyo nos motivan a seguir ofreciendo un ambiente acogedor y de apoyo. Esperamos seguir acompañándolos en este camino hacia una vida más saludable.
Thomas GreenwaldLocal Guide · 11 reviewsiTotal number of Google reviews Thomas has written across all businesses on Google Maps, not just this one.
I was referred to Underground Fitness and went to have a consultation in July. I had never done training prior to this, and from the first moment I felt comfortable. The actual gym is small enough to always be in touch with my trainer, and yet spacious enough that others aren’t a distraction as they go through their exercises. There are usually no more than 5 others when I am there, so it is truly personal training. I wanted to focus on building core strength; being 62 I want to ensure I have that going forward. Lee, one of the trainers, developed a program to strengthen my whole body. Ron, the owner as well as being another trainer, is always accessible and encouraging. I do 2 one-hour sessions each week, and it has been both challenging and rewarding. Access to a nutritionist and other health information is also available. With Lee, I see improvement week over week, and I just renewed for another 27 sessions. I’m excited to see what results I can keep achieving. I have already recommended Underground Fitness to others. If one is serious about finding an individualized fitness program, this is the place. 🙂
Response from the owner · a month ago
Thank you, Thomas, for the wonderful review and for recommending us. We are thrilled Lee and Ron have made you feel comfortable and that your personalized program is delivering steady improvements. It means a lot to know our small, focused setting and the additional support resources are helping you reach your goals. We look forward to continuing to support your progress.
Eva Avila2 reviewsiTotal number of Google reviews Eva has written across all businesses on Google Maps, not just this one.
I’ve been training at Underground Fitness for three months now, and this is the first time I’ve stayed consistent with working out for more than a month. I really appreciate how the trainers pay attention to your abilities and make sure you’re using the right weights. They also keep you motivated and encourage you to push yourself. It’s been a great experience, and I highly recommend Underground Fitness!
Services: Personal training
Response from the owner · a month ago
Eva, thank you so much for the wonderful review. We are thrilled to hear our trainers' attention to form and encouragement helped you stay consistent for three months. Hearing that you had a great experience and would recommend us means a lot. We look forward to supporting your continued progress.
Gina Matzdorff9 reviewsiTotal number of Google reviews Gina has written across all businesses on Google Maps, not just this one.
I absolutely love this gym! Its such a friendly staff. Its very comfortable and also very welcoming. The gym is very organized and always clean. Roxanne is a great trainer who puts together awesome challenging workouts that are effective and never boring. I highly recommend this gym!
Services: Personal training
Response from the owner · 2 months ago
Thank you so much for the wonderful review, Gina. We are thrilled to hear you feel welcome and comfortable and that our team, especially Roxanne, is delivering challenging and effective workouts. Keeping the gym clean and organized is important to us, and we appreciate you noticing. Your recommendation means a lot.
Brooke T.Local Guide · 37 reviewsiTotal number of Google reviews Brooke has written across all businesses on Google Maps, not just this one.
Ron and the team at UF are exceptional at what they do! I have learned so much from them through my 4 by 1 training with Ron, and I feel stronger and better educated after every workout. I love the consistency that the 4x1 training offers. The gym is super clean and there are never too many people when training times overlap. Support local Sunnyslope!!
Price assessment: Great price
Services: Personal training
Response from the owner · Edited 3 months ago
Thank you, Brooke! We’re thrilled Ron and the team have helped you feel stronger and more educated through the 4x1 training. We appreciate you noting the consistency, cleanliness, and manageable class sizes. Your support for local Sunnyslope means a lot to our gym and community.
Laurence Steller9 reviewsiTotal number of Google reviews Laurence has written across all businesses on Google Maps, not just this one.
I started working with Lee at Underground Fitness last month and have had a great experience. I wanted to build upper-body strength and see whether strength training could also help my running. The sessions are well organized, personalized, and challenging, with a strong focus on proper form. I already feel like I’m making progress and would highly recommend Underground Fitness to anyone looking for knowledgeable, attentive personal training tailored to their fitness level and goals.
Price assessment: Reasonable price
Services: Personal training, Private lessons
Response from the owner · 3 months ago
Thank you so much for the thoughtful review! I'm thrilled to hear you've had such a great experience so far.
I'll be sure to pass your kind words along to Lee. He does an excellent job tailoring each program to the individual while making sure every exercise is performed safely and effectively.
It's exciting to hear you're already noticing progress, both toward your strength goals and with your running. Thank you for trusting us with your training and for recommending Underground Fitness. We look forward to helping you continue building on that momentum! 💪
Joe SpectorLocal Guide · 13 reviewsiTotal number of Google reviews Joe has written across all businesses on Google Maps, not just this one.
I've worked out regularly my whole adult life, but over the last 2 years my fitness has really fallen off with starting a new business... It's been really nice being at underground fitness and having all of the thought and the brain power that goes into programming my workouts totally removed from my responsibility, as well as having accountability and learning so much about how to work out totally properly with balance and form. Ron has crazy top notch customer service too!
Response from the owner · 3 months ago
Thank you, Joe! We really appreciate you taking the time to share this. We're glad our programming, accountability, and coaching on balance and form have helped you stay consistent while running your business. Ron will be thrilled to hear your praise for his customer service, and we'll pass it along. We're here to keep supporting your progress whenever you need us.
Geoff Appleyard5 reviewsiTotal number of Google reviews Geoff has written across all businesses on Google Maps, not just this one.
Underground fitness is great, my trainer (Roxanne) provides the attention to detail I’ve had experience with personal training, but is not overbearing in a small group setting and at a great value.
Price assessment: Great price
Services: Personal training
Response from the owner · 3 months ago
Thanks so much, Geoff! We’re thrilled you’re enjoying Underground Fitness. Roxanne will be glad to hear you appreciate her attention to detail and her ability to coach without being overbearing in the small group setting. We pride ourselves on providing great value and effective personal training. Looking forward to helping you reach your next goals.
Heather3 reviewsiTotal number of Google reviews Heather has written across all businesses on Google Maps, not just this one.
I’ve been a member here twice now, and somehow it’s even better the second time around. It’s clear this gym continues to improve and evolve.
What I appreciate most is how structured and intentional everything is. The workouts are thoughtfully programmed, with clear guidance and purpose, but there’s also plenty of flexibility to tailor the experience to your own goals, fitness level, and preferences. It feels personalized without being overwhelming.
The trainers are knowledgeable, encouraging, and genuinely invested in your success. The atmosphere is welcoming, motivating, and focused on helping you make consistent progress.
If you’re looking for a personal training gym that combines expert programming with the flexibility to make it your own, I highly recommend it.
Price assessment: Reasonable price
Services: Personal training
Response from the owner · 3 months ago
Heather, welcome back! It means a lot that you trusted us enough to come back, and it's even more meaningful to hear that you feel we're better the second time around. We've worked hard to keep improving every aspect of what we do, so hearing that it shows is incredibly rewarding.
Thank you for recognizing the structure, flexibility, and the effort our team puts into making every program feel personal. Our goal has always been to create a place where people can make consistent progress while feeling supported every step of the way.
We really appreciate your thoughtful review and are excited to be part of your fitness journey again! 💪
