★ 5

Awesome, clean, space, and everyone is super friendly there. Unlike most fitness gyms, where none of the trainers smile and act like they're better than everyone else. I seriously feel super comfortable training here and even though it's not right around the corner from my home, it's well worth the drive. If you're a female, looking to get in shape and become more confident in your own skin, I highly recommend you see trainer Sarah! 👌 You won't be disappointed.

Source: Google

★ 5

Source: Google

★ 5

RF is an amazing gym to workout at. The staff are incredibly knowledgeable and you are sure to hit the goals that you want there. I would highly recommend this gym to anyone who wants reliable fitness advice and a great environment to workout at.

Source: Google

★ 5

Sophie is the best! She took me on as a nervous newbie, and made me feel super comfortable and safe. She's helped me with achieving my goals and made me grow in my confidence. She is extremely knowledgeable, encouraging, and understanding. I can't say enough good things about her, and highly recommend training with her!

Source: Google

★ 5

I’ve been going to Relentless for two years and have loved every minute. Josh runs a great facility and has built a strong community of trainers and clients. It’s low-key, inviting, and worth every penny. I owe so much to Emily and our workouts!

Source: Google

★ 5

I’ve been coming to this gym for 3 years, I love it here. Everyone from the trainers to the clients are all so friendly, and it’s a great community. It’s always clean. The privacy of this gym is excellent for beginners or someone who is not sure what they are doing. I personally was intimidated by gyms, and because of coming here I’ve been able to hit significant goals of mine weight loss and strength wise. I’ve also met some of my closest friends here as a bonus.
If you’re looking for a gym community that will push you to be your best, you won’t regret coming here.

Source: Google

★ 5

RF is a high-quality personal training gym in South City. Beyond the great trainers, I really appreciate how the gym—and its owner, Josh—actively supports the St. Louis community. Whether it’s through local partnerships, donations, or volunteering, it feels good to support a place that’s truly making a difference in this city.

Source: Google

★ 5

Awesome place to train. Very community driven and everyone makes an effort to make sure everyone feels welcome. You can be training for an event, or just working mobility, working on strength, or working on health and everyone is treated with the same importance. Really love coming here.

Source: Google

★ 5

Great atmosphere, always a nice temperature. Can’t go wrong with any trainer!

Source: Google

★ 5

I have been looking for a personal trainer worth their salt for over 15 years and finally found Matt Cantrell of Cantrell Coaching STL out of Relentless Fitness.

As excited as I am to talk about Matt's professionalism, knowledge, and empathic nature sadly I do not live in St. Louis. For eight weeks I was a resident in STL due to my son being born and having to stay in the NICU. During this time I was able to get in six sessions with Matt and worth every penny.

Bottomline, if I was overly wealthy I would hire him at an annual rate and never look back...not only was Matt killing it in the gym he also made sure to check on my entire family throughout the entire time we were living out of a hospital.

If you live in STL or the surrounding areas - do yourself a favor - call and ask for Matt Cantrell!

Source: Google

★ 5

Source: Google

★ 5

I have been working with Jason K. at Relentless for two years and have gotten great results. I have learned so much about training and nutrition - Awesome trainer, great gym.

Source: Google

★ 5

Source: Google

★ 5

I am having a great time at Relentless, all of the trainers are super friendly, and know how to work with your needs and goals. Jason is great to work with!

Source: Google

★ 5

Awesome facility with great trainers! I’ve worked with John Harley for years and highly recommend.

Source: Google

★ 5

Great friendly, accepting environment with a variety of trainers all with different methods to help you achieve your goals. Highly recommend!

Source: Google

★ 5

Source: Google

★ 5

Had an amazing experience! Cannot wait to come back. Great amount of space! Great people! Great atmosphere, too! 10/10 overall

Source: Google

★ 5

Great gym! Family atmosphere with people who want you to meet your goals. Emily is wonderful!

Source: Google

★ 5

I train with Ola at Relentless, he’s an amazing trainer always keeping me consistent and works with my busy schedule

Source: Google

★ 5

Good gym good trainers great results! Everyone is so smart and knowledgeable in their craft! Very diverse gym and friendly people.

Source: Google

★ 5

Source: Google

★ 5

Awesome Facility, Clean , love the colors, friendly staff.

Source: Google

★ 5

Relentless Fitness (RF) is an amazing studio to train at! My own trainer (Lil) is great, but all of the trainers I’ve interacted with (or seen with clients) are knowledgeable, patient, and passionate about what they do. I don’t think you could go wrong. Read their profiles and go with your gut, then reach out to the trainer you think is a fit. If you’re unsure, give it a try and I’m sure anyone would recommended a colleague if it were truly a better fit. RF is that type of collaborative space.

Being able to train in a private studio, without all of the added people of a big box gym is a nice benefit too. There is plenty of equipment for the number of people typically training. The trainers and trainees collaborate well to share equipment or rotate around, when there happens to be two people needing the same equipment.

If you’re questioning your fitness journey, just lean in! Having joined RF about 10 weeks ago, my only regret is that I debated it for 2 months before starting, and I could be deeper into my journey. Don’t be intimidated by the “gym” idea if you’re new, and don’t feel as though you can’t get enough from a place like this if you’re experienced. There really is a place for everyone, which makes me love RF even more!

Source: Google

★ 5

Source: Google

★ 5

Very welcoming environment with very knowledgeable trainers!
Get with Ola!

Source: Google

★ 5

Great gym, ola is very helpful

Source: Google

★ 5

Working out with Ola at relentless, is great, he pushes me to my limits and even beyond that. I like the way he trains and he’s also very patient with me. If you’re looking for a personal trainer, he’s the guy.

Source: Google

★ 5

Love these! So yummy and all around great business!

Source: Google

★ 5

I cannot speak highly enough of this gym. I'd give it a 10 if I could. :)

@Matt Cantrell is an absolute gem. I worked with him in 2019 before he moved to Colorado and was THRILLED that he moved back and I could work with him again. I drive from Florissant each week in order to meet with him. His background in physical therapy, and his history have made him a perfect trainer. He understands why I do what I do, and he helps me think through all the things that makes someone "healthy" - not just working out. He watches movements and ensures that I'm learning the correct form and posture so that I don't get hurt. He doesn't let me give up because my brain tells me to - he always knows when my body can give more. He's also SO personable and friendly and he gets along well with everyone, but when we're on the clock, I feel like my fitness is the only thing that matters to him. He's really a gift to the industry.

The gym itself is also wonderful. Huge windows that allow lots of light in and make it feel open and airy. Tons of equipment - I never feel like I have to wait for a machine. And everything is clean and doesn't smell like a typical gym. :) The bathrooms are stocked with lots of products that you may need to be able to work out over lunch and head right back to work.

Big fan. Big big fan!

Source: Google

★ 5

Training at this gym is great. There is a good vibe inside, and I really trust working with my trainer Matt Cantrell. He has been helping me to improve my posture. He's also addressing the areas that are imbalanced and literally retraining my body to be strong and limber. I'm playing the long game in life (hopefully) and want to feel as young as possible as I age. Thanks to Matt's training and eye for detail, I know I'm on the right road to keep reaching my goals and setting news ones.

Source: Google

★ 5

Matt Cantrell trainer - I am an almost 60-year-old women with balance and mobility issues. I was referred to Matt by a friend, I was hesitant to say the least. After months of convincing, I made a consultation appointment. Matt was professional and confident that he could help me and all my issues. To be honest, I sat in my car for 20 minutes before my consult, trying to talk myself out of going. Fast forward to today, I have been working out with Matt for a little over 6 months. He has helped me be more flexible, stable, and stronger. When we started this journey together Matt got more of a workout than I did, my range of motion was pretty much nonexistent. Matt has helped me move to being able to get up and down off the ground independently, I have gained range of motion in my knees and hips. I am now able to work out almost like a normal person. Matt is constantly updating my workouts to make sure I do not injure myself. I can honestly say that I have tried personal training before and always lasted a week, the trainer would just tell me what machines to use and how many reps to do and at what weight. I quit within 2 weeks, just not feeling supported and heard. Matt tailors his workouts to the needs of his clients. If you are even considering personal training, or just someone to help make sure you are taking the correct steps in your workout, I highly recommend contacting Matt Cantrell, you will not be sorry. I thank my friend every day for convincing me to take a chance.

Source: Google

★ 5

Training with Matt Cantrell for over a year has made an incredible difference in not only my appearance, but also my confidence in myself. I completely had gym anxiety when I started and that has disappeared. His depth of knowledge in anatomy, movement and nutrition, coupled with his ability to actively listen to my health needs and goals has been a recipe for great success! He employs patience in breaking down new movements, building a program to strengthen weak areas in my body as well as coach me through a diet that will be healthy & sustainable. I’ve lost weight and gained so much muscle, not to mention being able to do more things than I ever thought possible! I love the challenge. Thank you Matt for believing in me and for being the best coach I could ask for!!!

Source: Google

★ 5

Matt Cantrell has helped me so much - by helping me get stronger and helping me during injury. He is thoughtful, insightful, and super attentive. He also fosters community which is so healthy and motivating. I deeply appreciate his coaching input into my life.

Source: Google

★ 5

Matt Cantrell best trainer around!!!

Source: Google

★ 5

Matt Cantrell is the best! He has helped me fix my hip and groin pain that has been recurring for years. He also hosts group workouts and I love how I always feel like a part of the community training with him.

Source: Google

★ 5

This gym has the best trainers. All brilliant, dedicated and friendly. I approve of this gym as a safe space for people at any fitness level to achieve their goals!

Source: Google

★ 5

Source: Google

★ 5

Relentless is an awesome boutique personal training facility in South City! The equipment is really nice and the trainers are very knowledgeable! I also love how they build community within the gym members and the surrounding neighborhoods with big group workouts with Supplement Superstores! Definitely recommend!

Source: Google

★ 5

I have never been to a more welcoming and stress free gym! As a plus size woman, I always feel comfortable here.

Source: Google

★ 5

I’ve been coming here for more than two years. Everyone is friendly so it’s a nice community and a nice part of my week. It’s never too crowded and always clean and organized.

Source: Google

★ 5

I highly recommend this place if you’re seriously looking to get the fitness results you want. This place and their trainers will give you a very personalized service and make you thrive. This is a very different and unique experience in fitness, you will see the results you’re looking and become better with your fitness level. Excellent place with highly qualified trainers.

Source: Google

★ 5

Source: Google

★ 5

I absolutely love this space, it's more than a gym, it's an actual community! Every time you step foot in the door you are greeted with genuine happiness that you are there and surrounded by people just wanting to be a little better than yesterday. Can't say enough about the people who work there, truly such immaculate vibes!

Source: Google

★ 5

The people here are just awesome. It truly feels like a judgement-free zone, where the atmosphere is super positive, and everyone makes you feel like family. The trainers are great (shoutout to Matt Jordan with Trident Performance!), the equipment is great, and you're practically guaranteed to see amazing results. They also welcome all abilities and ages, and create an inclusive environment for everyone. I've got much love for the place!

Source: Google

★ 5

Great trainers and fantastic equipment. Been going here for 18 months and have put on size and lost fat!

Source: Google

★ 5

Source: Google

★ 5

Personal trainers are excellent always get a good workout!

Source: Google

★ 5

Its relentless alright

Source: Google

★ 3

Source: Google

★ 5

I started seeing Josh for personal training about 6 months ago. I was initially worried about returning to the gym due to covid. However, Josh and his team of trainers go the extra mile to keep everyone safe. Starting a personal training program has been life changing. I do not get bored with my workouts and look forward to going to the gym. I am in the best shape I have ever been in, I feel great!

Source: Google

★ 5

Source: Google

★ 5

Cleanest best gym in the Lou!

Source: Google

★ 5

Source: Google

★ 5

Relentless is clean and well equipped. Nick Martin is a fantastic trainer and will get you on the right track very quickly. Couldn’t recommend Relentless Fitness and Nick more.

Source: Google

★ 5

I had a chance to check out Relentless Fitness yesterday. Excellent gym with lots of space! I met Josh who was very professional and easy to talk to. Relentless Fitness is a great place to work out!

Source: Google

★ 5

I love my relentless fitness fam! They keep me accountable and make my workouts super fun!! #swolmates

Source: Google

★ 5

I've worked with Josh from Relentless Fitness for over 4 years and don't see that changing. He's not only incredibly talented and knowledgeable about how to build functional strength based on your specific needs and how to build the right nutrition plan to support those needs, but he's a really great person. He's uplifting, funny, supportive and goes out of his way to keep you going and make sure you feel like you have what you need to be successful. If we come up on a challenge we haven't worked through before, he researches the best way to overcome it safely. He's always learning and expanding his skill set, which only benefits his clients. We've achieved so much in four years and are on our way to my biggest goal yet - a full Ironman. I know with his support I can get there!

Source: Google

★ 5

Josh Houseman and the trainers of Relentless Fitness are a great group of people. I was never an athlete, but they have all become a great support system, along with the ladies I workout there with, to live a healthier lifestyle and work towards being a better me. If you would have asked me 5 years ago if I would physically be able to lift weights and run races, I would have probably laughed, but these trainers really bring out the strength you don't know you have inside you. Now I understand what people mean by "Fit Family."

Source: Google

★ 5

I've worked out with Josh Houseman at Relentless Fitness for a couple of years now, Josh is focused on a person's whole fitness, mind and body. He's really big on nutrition and great at teaching it. He is also the best at motivating you to push yourself harder and helping you in obtaining all your goals!

Source: Google

★ 5

Great place to acheive your goals!

Source: Google