By using this website you agree to our

Cardiff Triathlon

Event details


  • . 114 days left to book
IconSuggest an edit

See any improvements? Be the first to make this page better.

Why book with us?

  • Official booking partner
  • Best price guarantee
  • Free injury protection

Have a question? See our Help Center

Compete in the shadow of the Wales Millennium Centre with this Triathlon & Duathlon. Perfect for athletes of all stripes, the swim takes you out into the Bay and the cycle along traffic-free roads before culminating with an epic run along the Bay Barrage. Come for the experience of a life time.
C-19 Plan
Always Aim High Events has confirmed that this event will be going ahead as planned on Saturday 26th Jun 2021 in accordance with the COVID-19 safety measures. Learn more

Review summary

1 Review
  • Course
  • Organisation
  • Atmosphere


Harding W
"My daughter was a little annoyed in the the sprint as the kayak which..."
See all reviews

How to enter the Cardiff Triathlon

  1. Olympic

    Triathlon: Swim 1.5km, Bike 37km, Run 9km
    Book Now
  2. Sprint

    Triathlon: Swim 0.75km, Bike 18.5km, Run 4.7km
    Book Now
  3. Super Sprint

    Triathlon: Swim 0.4km, Bike 9.3km, Run 2.5km
    Book Now
  4. ITU Age Group Qualifier & British Championships - Draft Legal

    Triathlon: Swim 0.75km, Bike 20.4km, Run 5.2km
    Book Now

Cardiff Triathlon routes

The Cardiff Triathlon takes place in the city's scenic bay and is one of the most hotly anticipated events of the year.

Each swim section will take place in the Bay itself, before a quick transition and out onto completely closed, traffic-free roads. Finally, the race will end with a stunning run along the Cardiff Bay Barrage.

There a five separate events:

Olympic Triathlon: Swim 1500m, Bike 37KM, Run 9KM
Sprint Triathlon: Swim 750m, Bike 18.5KM, Run 4.7KM
Super Sprint Triathlon: Swim 400m, Bike 9.3KM, Run 2.5KM
Age Group ITU Qualifier: Swim 750m, Bike 20.5KM, Run 5.2KM

This year's event will also host the British Age Group Sprint Distance Triathlon Championships (Draft Legal) which doubles up as an Age Group ITU Qualifier.

This race gives the opportunity for elite athletes to qualify for the ITU Sprint Distance Triathlon World Championship's in Bermuda, 2022. All entrants must be British Triathlon Members to register.

Cut Off Times

Swim immersion times

Olympic - 50 mins

Sprint - 30 mins

Super Sprint - 20 mins

ITU Qualifier - 30 mins

All mass participation cyclists must be clear of the course by 10.00 am

Event Details

  • Event Village facilities including toilets
  • Unique and iconic transition area (Roald Dahl Plass)
  • Full route marking
  • Water stations around course
  • Free pre-event bike check
  • Mechanical support
  • Electronic chip timing
  • Family entertainment
  • Web results service
  • Pick-up wagons
  • Event photography
  • Emergency support
  • Event massage
  • Bespoke medal for all finishers
  • Fully closed roads (for both bike & run)
  • LIVE TV coverage on S4C and our jumbo screen at the event village!
  • Unique swim experience
  • Live bilingual commentary
  • Exclusive discounts (at the AAH Store)


0630: Olympic Triathlon (Wave 1)

0800: Sprint Triathlon (Wave 2)

0900: Super Sprint

1000: ITU Qualifiers

Registration can be completed either on Saturday evening or Sunday morning (race day). This will take place outside the Wales Millennium Centre.

  • Wetsuits are mandatory for the swim section
  • Participants must provide their own bike in good working order
  • Helmets are mandatory

This is a fantastic event for spectators and there are a variety of great vantage points across the bay.

Supporters are integral to making race days the fantastic event which they are and it would be great to see as many of you along as possible.

If you would like to find out more about volunteering at this event, please get in touch with: [email protected]

Frequently Asked Questions

Is there an age limit?
All 10KM and Half Marathon runners must be 17+ on 11/07/2021 and Marathon/Ultra runners must be 18+.
When is registration?
The registration process can be completed on either the Saturday afternoon before the event or the Sunday morning of the race.
Where can I access results?
Race times will be posted live as well as uploaded online after the event.
Do I need to be a BTF affiliated member to compete?
You do not need to be a member, however, those who are not will have to pay a £5 licensing fee on the day. If you are a BTF member, please bring your license with you to registration. All entrants of the ITU Qualifying event must be a BTF member.

Meet the organiser

Always Aim High Events was founded in 2010 by Tim Lloyd and Nigel 'Kenny' Kendrick. The first event was the now iconic Slateman Triathlon 2011 attracting just over 400 competitors (it now regularly exceeds 1,000), with a vision that included the Snowman and Sandman - the three events which now make up the Adventure Triathlon Series. From that one event we now host 34 all inclusive events over 9 weekends, with many more planned for 2019 and beyond. In 2015 Always Aim High Community Events was set up as a not for profit organisation to help with engaging with and hosting local community events. At Always Aim High we are extremely proud about delivering the UK's ultimate triathlon, cycling, running and swimming challenges in the most beautiful and iconic locations that we can find. From epic mountain, coastal and city triathlons, to breathtaking cycle sportives which cover the length and bredth of Snowdonia, there's something for everyone at Always Aim High Events!


Cardiff Triathlon reviews

5 out of 5 stars

  • Course
  • Organisation
  • Atmosphere
  • H

    Harding W

    Did the Sprint in 2019

    My daughter was a little annoyed in the the sprint as the kayak which another swimmer was hanging on and pulling her along kept on going in front of her and slowing her down they should keep their distance thought they were there if people needed to stop not help them in the swim.and getting in the way
IconSomething missing?

We're rebuilding our event pages and would love your input. Please suggest anything you would like to see on this page.

Secure your place


Tickets £66.95–£94.95

  • Official booking partner
  • Best price guarantee
  • Free injury protection

Have a question? See our Help Center