Unit 8, Tower Court, St. Davids Rd, Llansamlet, Swansea SA6 8RU

About Mainway Fitness

Home of Assault Fitness, based in Llansamlet, Swansea

Welcome to Mainway Fitness, home of assault fitness, based in Llansamlet, Swansea.

We offer the most uplifting fitness classes about with over 50 classes a week to choose from. We also have a state-of-the-art gym with some of most up to date equipment, so whatever your goals are we have the tools and experience to help you reach them.

Where it all began…

From a young age I had always been a sporty kid from playing a variety of different sports one being being football which I was lucky enough to play as a professional for my local team Swansea City FC. This led me down the path of being a personal trainer because of a career ending injury which made me look at other career opportunities.

Being interested in a variety of sports crossed over to me being introduced into functional fitness and HIIT (high intensity interval training). With it being so many different training variations, using all types of kit and really thinking outside the box (as they say), it made me love this style of training and help me grow my personal training business 10 fold!

That being said that’s exactly what you’ll find in our classes, you’ll rarely do the same class twice, which not only challenges you physically but mentally too.

Our Philosophy is built from 3 core values:

We’re very creative with our workouts and creating a friendly environment.

We’re very passionate about what we do and and helping every single person that comes through our doors.

We’re very personal, we treat everybody the same making sure new and existing members feel welcome and supported throughout their fitness and health goals.

The gym has a very unique feel to it, I’m a local guy with a very close knit team around from family members to long life friends, which creates a very friendly atmosphere that is full of personality. I believe we have a perfect team – combined with a number of members that have been part of the journey from the start 2010 and who are still keen members hitting 10 classes every week.

You really need to test this out and see for yourself, make the change today and we will change the way you think about training. We are passionate about what we do and our track record for transforming our members speaks for itself. We hope to see you very soon!

Carl Mainwaring

Meet our Team
What our Customers Say
Joining Mainway Fitness was definitely the best decision I made when deciding what gym to join!
Since Having two young children I’ve struggled with my weight. However, the team at Mainway helped me massively with training, nutrition and choosing a healthier lifestyle with always providing great support and knowledge. From the moment I walked through the door at Mainway fitness I’ve always been made to feel welcome. All coach’s and staff are always approachable, friendly, and helpful. Having a healthier lifestyle with training and dieting has been made enjoyable thank you to Carl and the team.
Lauren Huxley
Well I took the bull by its horns this last 2 weeks ...walked into classes by myself and went to the gym also by myself!
Everybody is so friendly and a good positive vibe here as well and I just got to say what a lovely friendly positive person Julie is, she is so friendly and encouraging, she is suited in your gym. Carl is very motivated and pushes and encourages you  Todd, Shaun, Kieran and Lewis are also encouraging as a trainers and Todd as a PT too ohh God.. I could go on and on!  It's so lovely to be around positive people and also crazy nutty people like Andrew and Steve!
Michele, Swansea
Can’t thank you guys enough for the Facebook lives in lockdown!! Made me remember how much I enjoyed fitness and got my mojo back!!
Got me back in a routine and kept my body and mind sane during a strange time! When gyms got the go ahead you guys worked effortlessly to create an awesome environment, I joined before lockdown I was nervous yet the welcome was so easy!! Todd and Carl are so down to earth and are always on hand for advice about training or just a chat! There genuinely are no egos, no judgements and the classes make you put the work in to get maximum results! Times and length means I’ve been able to maintain intense training around full time work and being mum! The fact you guys accommodate children is amazing and they love coming and being made to feel welcome too (even joining in). Hats off the gym is everything you want and more and love training with you all. Met some awesome people that are now mates too! Can’t thank you enough!
Emma Williams
I was very anxious starting Mainway but from the very first class Carl made sure me and my friends knew what to do and made an effort to keep checking on us.
Carl is a very warm person and you can see his personality creates the welcoming atmosphere that surrounds Mainway as everyone bounces off of him. All the instructors are friendly and push you hard in each class, but also helping you along the way. If you get stuck and don’t know what to do, all the established members will also help you out and spend time showing you what to do if an instructor is with someone else. I have never been able to stick to any kind of fitness routine and over the years I have tried a few different gyms and classes and only ended up attending a few times and given up. The Mainway family really make you feel at home and I’ve loved every second of my fitness journey so far this year. Thanks to all the support from the team, I have lost 1st 8lb in 4 1/2 months and I am now the lightest I have been in 13 years.
Gemma Parkin
Just wanted to say how unbelievably grateful I am to the whole Mainway team! I’ve lost 25kg thanks to Mainway and honestly I couldn’t be happier!
I have tried all sorts of gyms from budget gyms to premium health clubs and nowhere is quite like Mainway. I’ve never been able to shift the weight at these gyms but Mainway is different! It is the most welcoming friendly gym! The classes were fantastic for me when I was carrying weight all the exercises were friendly or adaptable for the ‘curvier’ person and now that I’m fitter I can really push my fitness in the classes! As well as this the gym floor is amazingly equip and is never too busy to do what you want! Honestly couldn’t recommend this gym enough!
Imogen Gifford
So I decided to leave my old gym just before Xmas and after speaking to a few girls they recommended Mainway the place to be. I was nervous at first.
My first class was TRX & Kettlebells and I absolutely had no idea what on earth I was doing. Carl was brilliant and on hand to help guide me through the exercises etc, the atmosphere was incredible everyone was friendly and it didn’t have that “click” which was a winner. The only way I could walk down any stairs was backwards lol, I worked muscles that I didn’t even know I had. I was so fed up with my weight, sluggish and hated what I saw when I looked in the mirror. Eight months on and 1 stone 5lbs lighter, skin is feeling better, my mindset is definitely more focused and more than anything my fitness has improved massively. I couldn’t of done it without you guys. So If your looking for a gym that has supportive and enthusiastic instructors, a mix of classes (which not one I have done is the same) bouncing music and one hell of a gym then Mainy’s is the place to be. Thank you guys for all the amazing classes and most of all the huge support.
Nicola Shaw