Exclusive First Timer Offer
New To Underdog Boxing?
Get started with our 3 class pack and experience 1st hand what a difference training at Underdog makes!
What Are Our Members Saying?
Was waiting for the day Underdog would re-open! I tried boxing for the first time with Underdog back in 2017. I’ve been hooked since, however, not many other gyms like this. The best space and more importantly, people! You’re certainly in for a sweat. Buzzing after my first morning back!
Amanda RussellYoga Studio Manager
Literally my favourite gym ever! So happy they are back. They are the most lovely people ever and I always feel great after a class. I was the fittest I’ve ever been back when they were open last. Excited to get back to that. Could not recommend enough!
Anna BinchyLaw Student
'This gym became almost my second home in Dublin. The community, the coaches are amazing and teach you how to achieve your goals - whatever they may be.
They also have a range of different types of lessons that will suit beginners, intermediate but also more experienced boxers. 🥊🥊'
Diana Melnikova Customer Success Associate
Start Your Boxing Journey
35 Classes / Week: Mornings, Lunchtime, Evenings, Weekends
- Fun and high energy boxing - fitness classes
- Technique AND Sparring with Pro & IABA coaches
- Strength & Conditioning classes
Which Classes Can You Attend?

HIIT Boxing
The Ultimate Calorie Burner
Burn up to a 1,000 calories per class and get fit and toned.

Power Boxing
Build Beastly Power
Build explosive power in this boxing - conditioning class.

Bag Blast
Pure Boxing Therapy
Clear your head, release stress and get a damn good workout!

DogHouse
Technique & Sparring
Learn advanced technique from PRO & IABA boxing coaches!

Strength
Sculpt That Body
Build a strong and conditioned body & improve your health!
What Are Our Members Saying?
'Fantastic gym, great setup, great atmosphere, top equipment. Trainers are brilliant, everyone is very welcoming. Instantly at ease when you arrive. Can't recommend enough if you are looking for a proper boxing gym or for very challenging and rewarding fitness classes.'
Eanna FordeAccountant
'I am a regular attendee at the HIIT Boxing Classes with Murilo and Kenny. Underdog is a really friendly and welcoming gym, I love the atmosphere there. The HIIT classes are great - always varied and the right mix of bag work and cardio. Plenty of pointers on boxing technique. I would highly recommend for anyone looking to get fit and learn some boxing technique.'
Craig KennySolicitor
'Cannot recommend Karl, Kenny and the gym enough. Begginer boxing course is brilliant, it feels both progessional and fun, exceeded my expectations. Will be staying on for the doghouse classes.'
Michael CrowleyLawyer
Try Our Classes
Intro Pack
3 classes in 2 weeks
€29
-
3 classes in 2 weeks
Start Your Boxing Journey
Value: €75 / You Pay: €29
Where To Find Us?
Location: 43 Clarendon Street, Dublin 2, D02 HX90
Phone: 085 198 1932
What Are Our Members Saying?
I recently completed a beginner boxing course at Underdog, and I couldn’t be happier with my experience. From day one, the welcoming atmosphere and top-notch facilities made me feel right at home. The course itself was well-structured, challenging, and incredibly rewarding.
Yichen WuSoftware Engineer
Cannot recommend this place enough! Kenny & Karl are fantastic teachers and two of the nicest lads on the go. The beginner class is the perfect mix of technique, cardio, bag/pad work, and a bit of light sparring (if you’re up for it). They often stay later with people to put in the extra mile, and have built a special community. Cheers guys!
Philip Ellison
Fantastic gym and very welcoming for newcomers. The coaches, Karl and Kenny, break everything down in an easy to understand way and offer great advice throughout the sessions on how to improve certain aspects. Thoroughly recommend Underdog Boxing Gym for anyone looking to get started in boxing.
Killian DineenBullion Broker
Get in the best shape of your life!
CHALLENGE YOURSELF.
TAKE IT TO THE NEXT LEVEL.
What Are Our Members Saying?
'Great club, awesome trainers and staff. Super pumped they reopened. Best boxing in the city!'
John Edward Hill
Best boxing gym in town! I'm excited about their reopening and training here again. Always tough, but very enjoyable workouts, great vibes and nice people.
Viktoria MunkacsiSenior Compliance Associate
Fantastic training given by informative and friendly instructors. Can't recommend highly enough.
Mark QuinnHead Of Business Development