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Cardiff Bay Try a Tri Swim

Event details


  • . 106 days left to book
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Dive into this open-water swim in Cardiff. With 4 distances on offer, triathletes looking for a training swim, and those new to swimming are more than welcome. Come for the unique location, finisher's goodies, and enjoy this summer swim.
C-19 Plan
Always Aim High Events has confirmed that this event will be going ahead as planned on Friday 25th Jun 2021 in accordance with the COVID-19 safety measures. Learn more

How to enter the Cardiff Bay Try a Tri Swim

  1. 750m

    Swim 0.75km
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  2. 1500m

    Swim 1.5km
    Book Now
  3. 3000m

    Swim 3km
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  4. 4500m

    Swim 4.5km
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Cardiff Bay Try a Tri Swim routes

Cardiff Bay is supplied by two rivers to form a 500-acre freshwater lake just south of the city centre. Swimming in the bay is only allowed with authorised access, so for exclusive use of this unique course, sign up now!

Each of the 4 distances is a point to point course, starting by the location of the former Dr. Who Centre and finishing at the end of Roald Dahl Plas.

The event was created primarily for triathletes looking to warm up, or gain some open water experience, but all levels and abilities are welcome. So whether you're new to open-water swimming, in need of some training, or want to challenge yourself with a new distance, this event is perfect.

There are 4 distances to choose from, with some of the longer distances completing laps of the 1500m course.

  • 750m - 1 modified lap
  • 1500m - 1 lap
  • 3000m - 2 laps
  • 4500m - 3 laps

Event Details

  • Marshals
  • Water safety and rescue boats
  • Finisher's momentos
  • Chip-timed, online results
  • Prizes for top 3 finisher's in each race
  • Epic event village (food and drink, massage, shop, bag drop)
  • Official event photography
  • On-site medical support


08:00 3000m Start

08:05 4500m Start

09:00 1500m Start

09:30 750m Start

*All timings will be confirmed in the weeks leading up to the event.


There will be specific registration times for each distance, which will be available via website and email approximately 10 days before the event.

Race packs, including your timing chip and event swim hat, will be available here for pick-up.

Age Requirements

  • 750m - 15 years old
  • 1500m - 17 years old
  • 3000m & 4500m - 18 years old


Depending on the temperature of the water on the day, wetsuits can be mandatory, optional or forbidden. Please bring a wetsuit to be safe.

Mandatory wetsuits must cover at least the torso. You can wear any type of wetsuit including shorties. Where wetsuits are mandatory, socks are permitted. Gloves are not permitted.

Up to 1500m - Forbidden above 22°C, Optional between 22°C and 14°C, Mandatory below 14°C

1501-3000m - Forbidden above 23°C, Optional between 23°C and 15°C, Mandatory below 15°C

3001-4000m - Forbidden above 24°C, Optional between 24°C and 16°C, Mandatory below 16°C

Always Aim High are always looking for volunteers to ensure their events remain so popular. There are a variety of roles on offer, and volunteers will be rewarded for their efforts.

For more information on volunteering please email [email protected] and express your interest.

Frequently Asked Questions

How old do I have to be to enter the Cardiff Bay Try a Tri Swim?
Entrants must be 15 years old and older to enter the 750m, 17 years and older to enter the 1500m, and 18 and older to enter the 3000m & 4500m events.
When will more information be available for the Cardiff Bay Try a Tri Swim?
All confirmed details will be available in entrants final instructions, and will be posted on the website 10 days before the event.
How will I recieve my race pack for the Cardiff Bay Try a Tri Swim?
Race packs will be available for pick-up on the day.

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!


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Tickets £20–£47

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

Have a question? See our Help Center