Hands down the best gym in Toronto!The equipment is unmatched and carefully curated with brands like Prime Fitness, Cybex, Nautilus, Atlantis, Panatta and Rogue.Dylan has built a serious training facility in Leslieville, and if you care about your training, this is the best place to be.

DYLAN IS THE GOAT

Been a member for almost a year now. Amazing clean facility with top of the line equipment/machines. Never busy and can always get my workout in without waiting for equipment.Highly recommend joining if you’re looking to take your results to the next level!

Great coaching! Some of the best workouts I’ve had are in this gym and the equipment is phenomenal. Definitely recommend.

Been training in person with Dylan for 3 months. The difference in my figure and increase in strength has been incredible. The compliments from friends on my figure has also been super motivating to keep pushing forward. The equipment is next level. Never been this excited to mix my work outs of free weights with this many machines until now. I also have this place at the top of my list for the models and talent I represent who want to up their game.

I came to ÜAC wanting to get stronger. I did not expect to also gain a part-time comedian.Dylan somehow runs a brutal, effective training session while also making me laugh so hard I almost drop the bar, which I'm told is not textbook safety technique but it works for us.Six months in and I'm lifting heavier, moving better, and genuinely look forward to sessions that used to feel like a chore.The programming is smart, the coaching is sharp, and the trash talk is world class. If you want results and a reason to actually show up, this is the place.

Cleanest facility with the most extensive range of equipment in the Leslieville area!

I can’t say enough about how much Dylan has transformed my life over the past three years. He is every bit as tough as he is knowledgeable, and I trust him completely. I started training later in life, but I have never once felt unsafe with him. He watches everything you do like a hawk, making sure your form, technique, and safety are always on point. He pushes me when I need to be pushed, but always knows what my body can handle. Three years in, I’m stronger, more confident, and genuinely grateful to have him as my trainer. Highly recommend Dylan!

I’ve been training at The Unterground for the past 8 months, and it’s been a great experience. During that time, I’ve become noticeably stronger and much more confident in the gym.Dylan has been my trainer, and he’s great. He’s extremely knowledgeable, charismatic, and knows how to push you while still making every session enjoyable. He can also be a little sassy at times — which definitely keeps things entertaining.

Fantastic gym! Incredible equipment and amazing people!!!

Every aspect of this space is intentional from the equipment, the flow, music, AC, shower, etc. Dylan has put meticulous thought into each and every aspect of the space. Vibes are excellent, friendly members, great staff!

Best collection of classic and modern bodybuilding equipment that I’ve seen anywhere before. If I cant get to 260 lean training here then it’s my own damn fault

Great gym good atmosphere! Dylan’s selection of equipment is very thought out and curated, that, along with his knowledge of training equals results!!

10/10 Equipment10/10 Trainers10/10 VibesAs someone who has never been a “gym person”, Ü has quickly become a safe space for me to find my confidence in working out. Huge shout out to Justin for truly helping me see how strong I can be. The owner is also a pretty cool guy.Big fan, highly recommend!!

Great equipment and space. Not too crowded. Great trainers.

Best gym! Amazing vibe, exceptional equipment, clean, friendly… and my trainer Justin? I can’t imagine my life without this guy. He’s changed me for the better. I 100% recommend this place. Toronto’s hidden gem.

The only place I’ll ever work out!

I’ve had a great experience training with Dylan. He’s knowledgeable, motivating, and really takes the time to make sure you’re doing everything properly and getting the most out of every workout. He pushes you when you need it, but never makes the sessions feel overwhelming.Dylan is also incredibly easy to work with, professional, and genuinely cares about your progress. I’ve noticed a real difference since working with him and actually look forward to our sessions. If you’re looking for a trainer who knows his stuff and will keep you motivated and accountable, I highly recommend Dylan!

Great space. Lovely trainers. I got a new nickname and I love it!

I’ve been training at Űnterground Athletic Club for the past six months, and I can honestly say it has been an incredible experience. My personal trainer Justin Alexander is extremely knowledgeable, kind, patient, and genuinely invested in helping me reach my goals. What I appreciate most is his ability to adapt and personalize each workout based on my fitness level, goals, and progress, while still keeping every session challenging and enjoyable.I’ve truly enjoyed every part of my training here with Justin Alexander and would highly recommend him to anyone at any level of fitness. Whether you’re just starting your fitness journey or you’re already experienced, Űnterground has the knowledge and approach to help you succeed.

Best equipment you can possibly find. Super clean. Friendly welcoming vibe. Dylan the owner is very knowledgeable and passionate not only about his space but also about the clients.

Well equipped and very clean.

Incredible space with all the best equipment!Cole is the absolute man!

Atmosphere is unmatched ! Best top-of-the-line equipment for resistance training downtown Toronto hands-down.

This place is spectacular. The machine are the best you can find in Toronto. Place is meticulously clean.

I started working with Dylan with the goal of building lean muscle mass. It's been about 4 months and I have lost around 10lbs while gaining around 2-3 lbs of lean muscle mass.Every set of every workout is dialled in and I feel I am working out at a peak level without feeling over stressed or strained.The combination of Dylan's knowledge, coaching style and the niche equipment in his gym is a potent combination that's giving me great results.The workouts themselves are fun and the vibe in the gym with the other members is welcoming and easy going.It's been fun so far and I look forward to continuing my fitness journey with Dylan!

⭐⭐⭐⭐⭐I’ve had an outstanding experience training here. My personal trainer is highly knowledgeable, motivating, and genuinely invested in helping clients achieve their goals. Every workout is well planned, challenging, and tailored to my needs.The gym itself is excellent—clean, spacious, well organized, and equipped with high-quality equipment. The atmosphere is welcoming and motivating, making it a great place to train consistently.I highly recommend this gym and its personal training services to anyone looking for professional guidance and excellent facilities.Flavio H.

Great gym, the best equipment in town, great people, and even better coaching. I’ve been really happy working with Dylan. It’s easy to stay consistent when you enjoy where you’re working out.

Have been training with Dylan 7 months now and it’s been great - top tier machines, really helpful coaching, and constant progress being made. It’s a fun group of people in this gym but never so busy to be disruptive. Pricing works out to be pretty affordable vs other 1:1 training gyms I looked into.

Dylan Thomas is an elite trainer/coach. He has a complete understanding of how to get results. Every details matters to him. His facility is super clean, large, and has the best equipment that he’s hand selected and refurbished. It’s a privilege to work out here. Zero nonsense.