7 Best CrossFit & HYROX Gyms in Cardiff, United Kingdom (Nov 2026)

Quick comparison7 gyms side by side · Show

Gym	Area / Transit	Type	Drop-In	Weekly	Climate	Book
Unit 15 Functional Fitness	Atlantic Trading Estate, Barry	CrossFit Affiliate	–	–	–	TeamUp
Reebok CrossFit Cardiff	Colchester Avenue Industrial Estate, Cardiff	CrossFit Affiliate	–	–	Open-Air + Fans	Website
Dragon Athletic	Fairwater, Cardiff	CrossFit Affiliate	–	–	Open-Air + Fans	WodBoard
Posibl	Off Newport Road, Cardiff	CrossFit Affiliate	–	–	Full A/C	TeamUp
UFit Fitness	South Cardiff (Trident Park, Ocean Way)	Functional Fitness Box	15 GBP	–	Full A/C	UFit app
HYVE	Colchester Avenue Industrial Estate, Cardiff	Functional Fitness Box	8 GBP	20 GBP	–	Website
CrossFit Michaelston-Y-Fedw	Michaelston-y-Fedw, Cardiff	CrossFit Affiliate	–	–	Open-Air + Fans	–

Unit 15 Functional Fitness

Official Affiliate: Unit15 CrossFit

4.9(38 reviews)

Official CrossFit AffiliateCrossFitHYROX

Suits beginners, HYROX athletes and Olympic lifters who want a community box in Barry, with a free taster class to try first. Book through TeamUp, because class times are fixed by day and the official site does not list a single drop-in price.

Best for: Beginners, HYROX prep, Olympic lifters

Atlantic Trading Estate, Barry unit15functionalfitness.com +44 1446 733391

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Reebok CrossFit Cardiff

Official Affiliate: CrossFit Cardiff

4.8(41 reviews)

Official CrossFit AffiliateOpen-Air + FansCrossFitHYROX

This affiliate suits athletes who want CrossFit WODs, weightlifting, gymnastics and HYROX sessions in an industrial warehouse. Know before you go: the training floor is not air-conditioned, and the official site does not publish a drop-in price.

Best for: CrossFit athletes, HYROX prep

Colchester Avenue Industrial Estate, Cardiff www.crossfitcardiff.com +44 29 2036 2987

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Dragon Athletic

Official Affiliate: Dragon CrossFit

4.7(53 reviews)

Official CrossFit AffiliateOpen-Air + FansCrossFitOlympic WeightliftingStrength and Conditioning Gym

Suits experienced CrossFit athletes visiting from another box, since the drop-in page requires at least six months of CrossFit experience. The one thing to know before going is that the training floor is an open warehouse with industrial fans and no air conditioning.

Best for: Visiting CrossFit athletes, HYROX prep, Olympic lifters

Fairwater, Cardiff www.dragonathletic.com +44 29 2056 5747

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Posibl

Official Affiliate: CrossFit Posibl

Official CrossFit AffiliateFull A/CCrossFitHYROXShowersChanging Rooms

Suits beginners and regular trainers who want coached CrossFit, HYROX and Olympic lifting sessions in Cardiff. Check the schedule first, since weekend hours are short.

Best for: Beginners, HYROX prep, Coached CrossFit

Off Newport Road, Cardiff crossfitposibl.co.uk

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UFit Fitness

Functional Fitness BoxDrop-in 15 GBPFull A/CCrossFitHYROXAir ConditioningSauna

Suits visitors who want CrossFit, HYROX, weightlifting or an open gym floor on a rolling monthly plan. Book classes in the UFit app in advance, and expect to pay £15 for a single class or £12 for an open gym day pass.

Best for: Visiting CrossFit athletes, HYROX prep, Mixed-training athletes

South Cardiff (Trident Park, Ocean Way)www.ufit-fitness.com

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HYVE

Functional Fitness BoxDrop-in 8 GBPCrossFitHYROXRed Light Recovery SuiteRed Light Sauna

Suits members who want flexible no-contract access and CrossFit or HYROX classes in Cardiff. Check the timetable before you go, because the sources give no class times and do not say whether the training floor is air-conditioned.

Best for: Visiting CrossFit athletes, HYROX prep, Flexible no-contract training

Colchester Avenue Industrial Estate, Cardiff trainhyvecardiff.com

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CrossFit Michaelston-Y-Fedw

Official CrossFit AffiliateOpen-Air + FansCrossFitHYROX

Suited to CrossFit and HYROX athletes who want a local farm-site box with a simple weekly timetable. Confirm prices and class times with the gym first, because no official website was readable and the third-party sources disagree on pricing.

Best for: HYROX prep

Michaelston-y-Fedw, Cardiff

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Which Cardiff Gym for Which Athlete

On a budget

HYVE

HYVE provides the lowest single entry in the city at 8 GBP for a drop-in session and 20 GBP for a weekly pass.

Open gym and lifting

UFit Fitness

UFit Fitness offers a 12 GBP open gym day pass along with air conditioning, sauna facilities, and cold recovery tubs.

Visiting competitor

Dragon Athletic

Dragon Athletic maintains a training floor suited to experienced athletes and requires visitors to have at least six months of prior CrossFit experience.

HYROX prep

Posibl

Posibl provides structured HYROX and Olympic lifting sessions in a fully air-conditioned facility.

CrossFit and HYROX in Cardiff: The Guide

Where the gyms are

Cardiff functional fitness boxes sit mainly in out-of-town industrial estates and commercial corridors across the city:

East Cardiff: Colchester Avenue Industrial Estate hosts Reebok CrossFit Cardiff and HYVE. Near the Newport Road corridor, Posibl operates close to the main thoroughfares.
South Cardiff: UFit Fitness operates in Trident Park on Ocean Way, close to Splott and the docks.
West Cardiff: Dragon Athletic serves the western suburbs from Fairwater.
Rural East: CrossFit Michaelston-Y-Fedw runs out of a converted farm building on the boundary between Cardiff and Newport.
Barry: Unit 15 Functional Fitness sits southwest of the city on the Atlantic Trading Estate.

What a drop-in costs

Drop-in rates run from 8 GBP to 15 GBP, with a median of 11.5 GBP among facilities that publish rates.

Gym	Single Drop-in	Open Gym Day Pass	Weekly Pass	Monthly Plan
HYVE	8 GBP	8 GBP	20 GBP	35 GBP
UFit Fitness	15 GBP	12 GBP	n/a	44.99 GBP

Booking rules differ across the city:

HYVE accepts walk-ins at the door during desk hours, with open gym day passes at 8 GBP, weekly passes at 20 GBP, and monthly packages starting at 35 GBP.
UFit Fitness manages sessions through its dedicated app, where you can buy a 15 GBP single class drop-in or a 12 GBP open gym day pass.
Dragon Athletic requires visiting athletes to have at least six months of CrossFit experience before reserving a drop-in slot through its website.
Unit 15 Functional Fitness schedules sessions via TeamUp and publishes monthly tier options ranging from 40 GBP for open gym to 70 GBP for full access.
Posibl and Reebok CrossFit Cardiff run regular daily timetables with bookings handled directly online.

Heat and climate

Gym climate control depends on the building type:

2 gyms offer full air conditioning: UFit Fitness and Posibl maintain regulated indoor temperatures throughout the year.
3 gyms operate open-air warehouse or converted spaces with industrial fans: Dragon Athletic, Reebok CrossFit Cardiff, and CrossFit Michaelston-Y-Fedw. These facilities track outside weather closely. Pack extra base layers for early morning sessions in winter.