Sprint Duathlon
Sun 22 Jun 2025 Cardiff, UK

Cardiff Sprint Duathlon

Situated in the renowned Cardiff Bay, this event stands out as a truly memorable city race. The event village and transition area are on Roald Dahl Plass in front of the Wales Millenium Centre.

  • Sun 22 Jun 2025
Wales Millennium Centre, Cardiff

Sprint Duathlon

07:30

Age 15 & over on 31 Dec 2025

£78.99-£83.99

  • 2.5 km road running
  • 18.5 km road cycling
  • 4.7 km road running

Event overview

Securing your spot in the Cardiff Triathlon and Duathlon not only grants you access to one of the UK's finest city triathlons but ensures an experience beyond compare.

Anticipate a meticulously planned route with closed roads, captivating global broadcast coverage, and vibrant racing atmosphere.

Whether you're tackling the Super-Sprint, Sprint, Standard, 70.3 triathlon, or Sprint Duathlon, the Cardiff Triathlon and Duathlon caters to all skill levels.

Plus there are swim-only options as part of the exciting weekend.

Don't miss out on this extraordinary event!

Highlights

  • Lively Event Village

    Music, commentary, shopping, food and chill out zones.

  • Family-friendly vibes

    Family finishes and plenty to see and do.

  • On course support

    Brilliant marshals, signage and pick-up vehicles.

  • Welsh slate finisher mementos

    Locally made to mark your achievement and provide a lasting, unique and usable memento.

  • Spectacular location

    Cardiff's unique city architecture offers a great backdrop to your race.

  • Professional timing

    Chip timing and online results.

This event is part of Cardiff Triathlon & Duathlon and Cardiff Bay Swim.

Event details

  • All fitness levels
  • Event expo
  • Event village
  • Free venue entry
  • Newcomers
  • Spectators
  • Teams
  • Traders at event

  • Bag storage
  • Cafe
  • Coast
  • Music
  • Restaurant
  • Toilets
  • Urban

Event HQ

Wales Millennium Centre
Bute Place
Cardiff
Cardiff
CF10 5AL
UK

  • First aid
  • Flat
  • Food stations
  • Marshals
  • Sweeper
  • Toilets
  • Traffic free
  • Water stations
  • Wave start
  • Way markers

Description

Both of the Duathlon runs are fast out and back routes, showing off the sights of Cardiff Bay along the way. For Run 1, start underneath the finish arch and head out towards the Norwegian church and along the cycle path, taking in the sites of industrial heritage that Cardiff is so renowned for. Then reach the turn around point and race back the way you came into transition ready for the Bike section.

The Bike course takes in 2 laps of a 9k course. Heading out of transition under the shadow of the Wales Millennium Centre you will head along James Street and down Ferry Road. You will turn around at the Morrisons Supermarket roundabout and fly back up the road the way you came. You will then head up Lloyd George Avenue and thrill at the speed on this section, with another turn around to come at the top so that you get to fly down the avenue once again. The lap ends at the entrance to the Oval Basin where once again you’ll be under the watchful eye of the Wales Millennium Centre. Unless of course you have another lap to go! This route is on ENTIRELY CLOSED ROADS.

Run 2 takes you out of transition, and head in the same direction as Run 1 but this time you go right up to the Barrage before you turn around. On your way back you get the iconic views of the Pierhead Building, the Wales Millennium Centre, the Senedd so you’ll have plenty to keep you motivated as you go for your PB!

Maps

swim
SWIM

(Bike route to be confirmed.)

run
RUN

Cut offs

In the interest of athlete safety and the safety of our volunteers on the course, there will be strict cut-off times in place.

  • You have a total of 35 minutes to complete your Run1 and exit transition.
  • You have a total of 1 hours 5 minutes to complete your bike and exit transition.
  • You have a total of 1 hour to complete your run.

Timings are subject to change. 

Sustainability

  • Bring your own cup
  • Plastic bottle free
  • Plastic-free event
  • Public transport links
  • Recycling
  • Reusable cups
  • Sustainability policy

  • Chip timing
  • Eco medal
  • Event app

Prizes

Prize Categories are (for both open and female):

Individual

  • Overall - Top 3

  • Age 15 & over on 31 Dec 2025
  • Entries open
  • Enter online

Entry fees

Entry fee

£78.99

Valid to 01/06/2025

Entry fee

£83.99

Valid 01/06/2025 - 20/06/2025

The Sprint distance was my first ever triathlon. I'd definitely recommend this event to anyone, and I've already entered for next year's Olympic distance. David J

This is my 3rd Cardiff Tri at Standard distance and again it did not disappoint... It’s my hometown race and once again, I’ll still come back next year. Eleanor P

This is a very fast course with a pan flat bike and run course. The swim is also very simple... Sam A

Great event. Wanted to take part in this because of its sheer size. Glad I did it was brilliant. Darren V

Last year's Sprint was my first attempt at triathlon. I loved it so much, I entered this year's Olympic distance the following week. David J

The event itself was absolutely amazing! Loads of support even on a rainy day and the transition area in Roald Dahl Plass just made it even more special. The Swim was excellent and really fast in the calm waters of Cardiff Bay. Chris W

Loved Cardiff Tri - completed as my second Olympic distance. Registration day before was nice and easy, good set up of stalls to grab some clobber and we got socks, a cow bell, foam hand and energy bar on sign up. Sarah W

I wouldn't hesitate to recommend this one. A well organised event with a super friendly events team. Victoria W

Reviews thanks to RaceCheck

Other races at event

  • Sun 22 Jun 2025
  • #1 of 9
Wales Millennium Centre, Cardiff

Super Sprint Triathlon

09:00

Age 15 & over

£88.99-£93.99

  • 400 m lake swimming
  • 9.3 km road cycling
  • 2.5 km road running
  • Sun 22 Jun 2025
  • #2 of 9
Wales Millennium Centre, Cardiff

Sprint Triathlon

08:15

Age 15 & over

£98.99-£123.99

  • 750 m lake swimming
  • 18.5 km road cycling
  • 4.7 km road running
  • Sun 22 Jun 2025
  • #3 of 9
Wales Millennium Centre, Cardiff

Standard Triathlon (World Championship Qualifier)

07:00

Age 17 & over

£115.99-£120.99

  • 1500 m lake swimming
  • 40 km road cycling
  • 9 km road running
  • Sun 22 Jun 2025
  • #4 of 9
Wales Millennium Centre, Cardiff

Standard Triathlon (Non Qualifying)

07:00

Age 17 & over

£115.99-£140.99

  • 1500 m lake swimming
  • 37 km road cycling
  • 9 km road running
  • Sun 22 Jun 2025
  • #5 of 9
Wales Millennium Centre, Cardiff

Legend (70.3) Triathlon

06:00

Age 18 & over

£229.99-£249.99

  • 1900 m lake swimming
  • 88 km road cycling
  • 21.8 km road running
  • Sat 21 Jun 2025
  • #7 of 9
Wales Millennium Centre, Cardiff

Cardiff Bay Swim 750m

10:15

Age 15 & over

£37.99-£39.99

  • 750 m dock swimming
  • Sat 21 Jun 2025
  • #8 of 9
Wales Millennium Centre, Cardiff

Cardiff Bay Swim 1900m

09:30

Age 18 & over

£47.99-£49.99

  • 1900 m dock swimming
  • Sat 21 Jun 2025
  • #9 of 9
Wales Millennium Centre, Cardiff

Cardiff Bay Swim 3800m

09:00

Age 19 & over

£57.99-£59.99

  • 3800 m dock swimming