Information about Relentless MMA & Fitness

Merritt St 105
L2T 1J7, St Catharines
+1 905-641-8509

Opening hours

  • Monday: 4:30 – 9:30 PM
  • Tuesday: 9:00 – 10:30 AM, 5:00 – 9:00 PM
  • Wednesday: 8:00 – 10:00 AM, 5:00 – 9:00 PM
  • Thursday: 9:00 – 10:30 AM, 4:00 – 9:00 PM
  • Friday: 8:00 – 10:00 AM, 4:30 – 8:00 PM
  • Saturday: 8:30 AM – 1:00 PM
  • Sunday: Closed
At Relentless MMA & Fitness we offer a variety of classes for all ages & Skill levels! We are a modern martial arts gym that focuses on Kickboxing, Jiu Jitsu, MMA & Fitness classes for Kids, Teens and Adults! Our programs start at the age of 5 for Kids, all the way up to 70+! All of our coaches are very professional & aim to give everyone a great experience in a comfortable atmosphere. Looking to lose weight, learn self defense, gain confidence, try something new, or even become a competitor? Relentless is the perfect place for you! We offer a Free Trial to everyone! Contact us to get started today!

Relentless MMA & Fitness: Opinions

4.9/5 (51 Opinions)
Alexis Jade 10 months ago

Fantastic experience: My kiddo recently started attending BJJ and I honestly cannot say enough positive things. She's much smaller than the other kids yet the coaches always help encourage, and validate her strengths. Great facility, even better staff.

Relentless MMA & Fitness

Thank you, Alexis! She is doing great!

Ian Chisholm 1 year ago

Fantastic experience: I walked into Relentless about 3 years ago, in a transitional time in my life where I was finishing University and stopped playing team sports but wanted to stay somewhat active. Although people don't think of combat sports as a team sport, I can assure you that Relentless is a team closer than any I have previously played for. The owner, Pat, and everyone involved here have created a special atmosphere where people training for competition OR recreationally can train together in a safe and positive environment. It really is a tight knit group of people open to anyone regardless of experience or goals.

Relentless MMA & Fitness

Thanks Ian!

Roman Sverdlov 1 year ago

Fantastic experience: Great place for kids and teens! Amazing coaches.

Relentless MMA & Fitness

Thank you!

Fiona Guy 1 year ago

Fantastic experience: Relentless MMA is an outstanding MMA gym offering a variety of programs. My kid’s are thoroughly enjoying the kickboxing program. It’s more than just a place to train; it’s a community where kids can make friends, build confidence, and have fun while learning kickboxing. The atmosphere is filled with camaraderie, creating a family-like environment where everyone supports each other. The coaches are incredibly hardworking and dedicated, providing excellent training and guidance for all age groups and skill levels. I highly recommend Relentless MMA to any parent looking for a nurturing and positive environment for their child's martial arts journey and the diverse range of classes ensures that there's something for everyone, making it an ideal place for both children and adults to train and grow

Relentless MMA & Fitness

Thank you!

David Crawley 1 year ago

Fantastic experience: Thank you for your support.

Relentless MMA & Fitness

Thank you!

Jack Corrigan 1 year ago

Fantastic experience: The go-to spot if you're looking for a friendly tight-knit community with great coaches who are invested in your development.

Relentless MMA & Fitness

Thanks Jack! We are glad to have you!

Gia 1 year ago

Fantastic experience: The best martial art for kids around St Catherine’s. 1Clean 2No stinky smell from dirty feet’s, big big plus! 3Kids spending time learnings movements ( not talking) most places teacher stretching time talking.

Relentless MMA & Fitness

Hi Gia! Thanks for the kind review!

Austin Sidler 2 years ago

Fantastic experience: Joining relentless was easily one of the best decisions I've made in my adult life. I was overweight , my mental health was suffering and I took a chance at this Gym with 0 experience and I'm so happy I did. I've lost almost 30lbs in 6 months and feel like a whole different person. I was nervous my first class and Coach TJ and Jordan did an amazing job making me feel part of the family from day 1. The owner coach Pat is constatnly challenging and pushing us to become the best possible versions of ourselves and I couldn't be more grateful. If you are on the fence to join or not , i strongly encourage you to take a trial class , the atmosphere is great and I've met some really awesome people. I hope this Gym continues to grow and receive the recognition it deserves.

Relentless MMA & Fitness

Thanks Austin. Keep up the great work, it's a pleasure having you here!

Midhat R 2 years ago

Fantastic experience: If you are looking for activities for your children 5 and up this is it. Our kid go to the kick boxing classes and they not only learn self defense but also get a great work out and meet other kids. The owners and coaches are all lovely people. We will probably be life long customers here. The facility is clean and well kept as well with clean washrooms. The parking lot can use a little improvement but that is the only con of this place.

Relentless MMA & Fitness

Thank you! We are hoping the landlord will fix the parking lot soon!

Ali Amin 2 years ago

Fantastic experience: I am absolutely thrilled with my experience at Relentless! The Strength & Conditioning classes have been life-changing. I can't thank the S&C coaches (TJ, Kait and Chelsey) enough for their exceptional support. The atmosphere is welcoming, the workouts are challenging yet rewarding and the sense of community is unparalleled. I highly recommend Relentless to anyone looking to achieve their fitness goals and be part of an inspiring fitness family led by owners Pat & Kait Chapman.

Relentless MMA & Fitness

Thanks Eli!

Runners S. 2 years ago

Positive experience: Can't really tell you about this place either way - love the way it looks inside but I don't know if it is even open. So I am giving it good reviews because really the only thing I wanted was a response to a simple request.

anand kumar 3 years ago

Fantastic experience: I trained here for 4 months and already felt like a part of the team. The gym is always full of energy and enthusiasm and it's good to train among people with high morale. Coaches are top notch, they help you figure out every single detail you are wrong at and push to excel. They also take good care of you and help develop a learning environment. Personally, All I wanted to do when I joined this gym was improve my stance, punches and footwork but ended up doing much more and loved every bit of it. Doing all Kickboxing, Boxing, Jiu-Jitsu takes a lot from you but I would say it depends on how far you want to go and what your goal is. For me it was trying all of it and make use of my free time. The thing I liked a lot is that coaches work on specific schedule and a game plan so being consistent matters if you want to learn and make most out of it. Lots of love and respect for "Relentless" coaches.. thanx for taking me in the club and help me learn and improve.

Relentless MMA & Fitness

Thanks for the kind words. It was a pleasure to have you the last 4 months, Anand. All the best in NS! - Pat

Jeanine Bruinsma 3 years ago

Fantastic experience: Amazing group of coaches! I want to thank the coaches at Relentless for going ABOVE and BEYOND in modifying workouts while I have been recovering from a broken arm. This has allowed me to continue on my fitness journey during the healing process and physio with incredible support. I’m extremely happy to have found this gym !

Relentless MMA & Fitness

Thanks for the kind words, Jeanine!

Joe Ferguson (Average Joe) 3 years ago

Fantastic experience: What an amazing experience at this gym. Being there a year now as a family, Pat and the Relentless coaches truly care for the health, well being, and progression of every one of the Relentless family. My wife, my son, and myself all have different skill levels and goals, but they fine a way to challenge all of us.

Relentless MMA & Fitness

Thank you Joe!

Ethan Siebert 3 years ago

Fantastic experience: Been training here for 10 month, place is one big family and community. Absolutely amazing gym Team Relentless Strong

Relentless MMA & Fitness

Thanks Ethan!

Blair Owens 3 years ago

Fantastic experience: Really positive and supportive environment. I came in knowing nothing and I’ve had a lot of fun learning and gaining confidence with different techniques. The gym is clean and well maintained. The coaches are really attentive and knowledgeable - they’re always happy to offer tips.

Relentless MMA & Fitness

Thanks for the kind words Blair!

David Sudri 3 years ago

Fantastic experience: An extremely positive and supportive environment full of hardworking and disciplined people, I was around 260-270lbs when I first joined Relentless, I’m now one of their competitive kick boxers and weight 215lbs. They helped me with more than just weight though the coaches and community played a big role into the person I’ve become.

Relentless MMA & Fitness

You've been a positive influence on us all as well, David!

Cameron Gillis 3 years ago

Fantastic experience: Great hospitality and amazing coaches!

Relentless MMA & Fitness

Thanks Cam!

Chelsey Kovacs-Sneath 3 years ago

Fantastic experience: Love this place! So warm and welcoming to new members. Safe environment for women. No judgement at all! Fun fitness, kickboxing, BJJ, boxing and kids programs!

Relentless MMA & Fitness

Thanks for everything you do, Chels!

John Hoadley 3 years ago

Fantastic experience: In the past, I always had a hard time sticking with a fitness routine as I was never really a "gym guy". The "Strength and Conditioning" classes here are fantastic. The 45-50 minute workouts are intense and varied and the instructors are very encouraging. The environment is welcoming and free of judgement. I recommend Relentless MMA for anyone regardless of where they are on their fitness journey. I've been going several times a week for almost a year now and have noticed a marked improvement in strength and endurance.

Relentless MMA & Fitness

Thanks John! Keep up the great work!

Sonya Tofalo 3 years ago

Fantastic experience: My boys LOVE their kickboxing class. The coaches are patient but firm with kids, which they need. We love Relentless, would 100% recommend to anyone looking for a gym.

Relentless MMA & Fitness

Thank you Sonya!

Dylan Malcolmson 3 years ago

Fantastic experience: Great coaches, excellent facility and welcoming community

Relentless MMA & Fitness

Thanks for the kind words Dylan!

Geoff Gamble 3 years ago

Fantastic experience: Amazing family oriented facility that places a huge emphasis on the personal touch. They offer everything from youth rec to adult competitive classes with instructors who are dedicated and invested in your success. Highly highly recommend!!!

Relentless MMA & Fitness

Thanks for the kind words and continuous support, Geoff!

Antoine Widloecher 3 years ago

Fantastic experience: So first of all, the welcoming of the staff at this gym is far beyond all the others in the area. You’re welcomed by professionals and directly you feel including in a team that will push you upward. Secondly the gym area and the showers are so cleaned and well maintained. And to finish the gym is newly, amazing and the trainers are focused with you, super friendly, professional and they give great support. Great place !

Relentless MMA & Fitness

Thank you Antoine! We are glad you had a great experience!

George Caffreycraig 3 years ago

Fantastic experience: Clean gym, great environment to work hard, coaches are friendly and knowledgeable. Overall great place to train

Graeme Michel 3 years ago

Fantastic experience: Very good

Relentless MMA & Fitness

Thank Graeme!

George Caffrey-Craig 3 years ago

Fantastic experience: Clean gym, great environment to work hard, coaches are friendly and knowledgeable. Overall great place to train

Relentless MMA & Fitness

Thanks for the kind words, George

Ben Beckwith 3 years ago

Fantastic experience: Learning kickboxing as a complete amateur can feel extremely awkward. Didn’t experience any awkwardness at Relentless. The coaches are kind, knowledgeable, and extremely patient regarding questions. Great environment too, there is a fun energy that takes it from a great workout to an hour you’ll look forward to every day. If you want to try kickboxing or BJJ but you’re hesitating, do yourself a favour and go for a free trial class.

Relentless MMA & Fitness

Thanks Ben!

JC Le 3 years ago

Fantastic experience: Awesome staff and great welcoming environment. Clean and well lite facility. Free onsite parking.

Relentless MMA & Fitness

Thank You!

Caitlan How 3 years ago

Fantastic experience: New members to Relentless and our experience has been wonderful so far. The coaches are fantastic and the gym is well taken care of. Highly recommend!

Relentless MMA & Fitness

Thank You!

Jennifer Dell 3 years ago

Fantastic experience: This place is the bees knees! I came looking for a place to lose weight postpartum and I stayed because of their genuine kindness. It’s a great community to belong too and the owners as well as the other trainers are the bomb dot com! I’m pleased to have found them!!!

Relentless MMA & Fitness

Thank You!

Rob Michel 4 years ago

Fantastic experience: I have been a member at Relentless for the last 2 years. New and old members here are part of something big. You’ll know what that after you experience your first class in Kickboxing, Brazilian Jiujitsu, Boxing or Strength and Conditioning. Nothing compares to the energy that Pat, Kait and the coaching staff bring to the mats each day. No club can even come close to achieving the same atmosphere and encouragement that you get here. Relentless is family through and through.

Truce R 4 years ago

Fantastic experience: Wonderful place, I highly recommend it. Great & fast communication! I went in for a trial class and it was a wonderful experience, everybody that I met was super nice & welcoming. The community there seems to be awesome, I signed up for a full membership the same night of my trial class & I am excited to learn, train & become apart of their community! Great coaching team with lots of experience great for anyone who wants to just get in shape or even get into competition fighting! I have only been to one class but from my experience so far in and out of the gym, it has been amazing!

Mitchell Rooney 4 years ago

Fantastic experience: Best gym around! The community environment makes everyone feel comfortable and Pat and Kait are great instructors! Learning a lot with a killer workout - 10/10

Relentless MMA & Fitness

Thanks Mitch!

Peter Rainville 4 years ago

Fantastic experience: I have interacted with Pat and Kait outside of their gym and am inspired by their energy and passion they put not only into their gym, but also their team and more importantly their clients. If you’re thinking about a different approach to fitness, I highly recommend you meet Pat and Kait...

Relentless MMA & Fitness

Thanks Peter!

Rachael Goertz 4 years ago

Fantastic experience: The best place to train, period. Their Conditioning program has gotten me into the best shape of my life and their Brazilian Jiu Jitsu coaches are exceptional in terms of attention to detail and support. The owners are dedicated and have gone above and beyond to provide online training during the pandemic, and now it's so good to be back!

dave gorman 4 years ago

Fantastic experience: If you want a great workout with a great atmosphere, this is the place.

Relentless MMA & Fitness

Thank you Dave!

Armstrong Malan 5 years ago

Fantastic experience: The environment here is very good.

L W 5 years ago

Fantastic experience: A great place to train! You will learn the fundamentals of K1 kickboxing with an amazing community! This gym also offers BJJ, boxing, and fitness for various ages! Well worth checking out!

Relentless MMA & Fitness

Thank you!

Joey Banh 6 years ago

Fantastic experience: Never done kick boxing before but this gym made me really enjoy it! They really focus on technique and real kick boxing skills. I would have continued with them if I hadn't moved to B.C.! Highly recommend! Thanks Pat and Cait for putting your passion into the gym and the members! 100% worth every penny! Now I have to find a gym out here as good as them!

Relentless MMA & Fitness

Thank you Joey! Hope you are doing well out West!

Kay S 7 years ago

Fantastic experience: This isn’t your regular gym. Relentless is a community of people from different walks of life growing stronger together each day. Kait and Pat care tremendously for their team of people as well as their local community of Niagara. Dave is always prepared with fundamental to advanced teachings in Brazilian Jiu Jitsu. He helps us better ourselves every day, on and off the mats. They all continuously show me, personally, what a supportive set of coaches should look like! I highly recommend Relentless MMA & Fitness.

Christina F 7 years ago

Fantastic experience: Fabulous gym and instructors. Relentless is great for beginners or experienced. They make you feel comfortable regardless of your skill level. If you are looking for a great workout, confidence boost, strength, conditioning and a positive atmosphere look no further. Pat and Kait are awesome

Kirstyn 7 years ago

Fantastic experience: This isn’t your regular gym. Relentless is a community of people from different walks of life growing stronger together each day. Kait and Pat care tremendously for their team of people as well as their local community of Niagara. Dave is always prepared with fundamental to advanced teachings in Brazilian Jiu Jitsu. He helps us better ourselves every day, on and off the mats. They all continuously show me, personally, what a supportive set of coaches should look like! I highly recommend Relentless MMA & Fitness.

Hari Selvan 8 years ago

Fantastic experience: This place is great! Pat and Kait are extremely welcoming - they allowed me participate in a few classes free of charge before paying a monthly fee. As a beginner, I found the environment awesome to get myself started. Would highly recommend to friend and family

Tj Jones 8 years ago

Fantastic experience: Great club, excellent coaches, fantastic training environment. They offer variety of classes for all ages. Good for anyone looking to get in shape, learn self defense and much more. I would highly recommend Relentless mma & fitness.

Dana Drohomyrecky 8 years ago

Fantastic experience: I can't say enough good about Relentless. Pat and Kait are patient and encouraging yet motivating coaches, and the whole community was welcoming right from my first visit. I would recommend that anyone, beginner or experienced athlete, who is even a little bit curious come and try out this facility.

Matt Scobel 8 years ago

Fantastic experience: Fantastic place to workout or learn MMA in Niagara. Strong community, great coaching and a really cool setup for a gym.

Matt Parsons 8 years ago

Fantastic experience: Great atmosphere. Very friendly. Great for all skill levels.

Dana McElroy 8 years ago

Fantastic experience: I can't say enough good about Relentless. Pat and Kait are patient and encouraging yet motivating coaches, and the whole community was welcoming right from my first visit. I would recommend that anyone, beginner or experienced athlete, who is even a little bit curious come and try out this facility.

alexa massie 8 years ago

Negative experience: I went there tonight and told them what I can do and what i need to learn and they turned mw down just because of my medical. I asked them to show me how to block my head and stomach cuz i have a shunt. But as soon as i mentioned the shunt they turned me down. And when we were there all they were teaching is punching and kicking no blocking or anything. Im not impressed and this is their furst summer open.

Derrick Med 9 years ago

Fantastic experience: This is a great martial arts club. They offer jiu jitsu, kickboxing, and conditioning classes so you can choose what interests you. I bought an unlimited pass so I can do all three. The instructors know how to create a great atmosphere and get you to push yourself.

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