We always have lots of cool stuff happening – in this section we aim to keep you updated with the latest news from the Castle Triathlon Series.


The Castle Triathlon Series celebrates 10 years of nurturing triathletes

February 22, 2018

The Castle Triathlon Series is celebrating its 10-year anniversary this year having hosted their first event, Hever Castle Triathlon, in 2009 with 1,100 competitors.

The prestigious triathlon series will host 18,000 competitors across six weekend events in the UK, Ireland and France in 2018. The Hever Castle Triathlon has grown by a huge 500%, and is now the third largest triathlon in the UK with over 6,000 competitors. It’s also been recognised as the world’s largest junior triathlon.

The Series celebrates an unprecedented 43% return rate (36% return for the infamous Bastion Iron Distance event) testament to its stunning locations, festival offering and event atmosphere.

Seasoned athlete, David Bishop, best described the events. “It’s more than just a race. With Castle Tri you enjoy the whole event experience, not just race and leave, and I personally love seeing the children compete.”

 With the conception of the Castle Triathlon Series (CTS), ten years ago, came the first triathlon offering for all the family with multiple distances over one weekend. The community following has since grown and the weekend further developed to make the athlete and spectator experience truly memorable. The loyal CTS team work hard to continue nurturing the #CastleTriFamily.

10 Years of Life Defining Races – Watch the Highlights

Top 10 facts about the last 10 years (see attached timeline)

  1. Grown from 1,000 to 18,000 annual competitors
  2. Expanded from one to five iconic castle locations
  3. Offers 10 different triathlon distances across the event weekend
  4. Camping and festival are central themes; last year saw 1,000 campers at Hever Castle alone
  5. The Castle Triathlon Series created the first curriculum-linked primary school resources for triathlon (Tri Knights) and subsequently created materials for Triathlon Scotland, Welsh Triathlon and Triathlon Ireland helping them grow their junior triathlon membership
  6. The Series embraces diversity. This was borne out in glorious technicolour when competitor Bailey Matthews (an eight-year-old with cerebral palsy) rose to Global fame and was awarded the BBC Personality of the Year Award after competing in the 2015 Castle Howard Triathlon
  7. Introduced the Keep Loyalty Scheme recognising people who have returned year-on-year to the Series, testament to the 43% loyalty rate
  8. One of the first to introduce Mixed Team Relay races (short triathlon for each of the four team members) to celebrate the format adopted at the 2020 Olympics
  9. First timers, novices and female competitors are a key focus with the Starter Tri field growing at 30% year-on-year
  10. Hosted more than ten qualifying races including the British Middle Distance Championships at Hever Castle on 8th July 2018

Forward Focus

Brian Adcock, Founder and Race Director explains: “Triathlon and family friendly festivals will continue to be at the heart of the Castle Triathlon Series offering. Our growth will come organically from nurturing novices at one end, whilst hosting more qualifying races at the top end to attract age groupers and serious athletes. At the same time we will start to offer solus runs and swims during the event weekends aiming to appeal to the wider running and swimming market, as well as injured/training constrained triathletes. The runs will form The Castle Run Series and include a 10K, half marathon and at Hever Castle in July a full marathon. The swims will also have three distances; 1 mile, 5k and 2.5k and will be trailed as the Castle Swim Series.”

The 10 Year Story in Stats:

  • 100,000 total competitors who have taken part in a triathlon with the CTS
  • 18,000 junior triathletes
  • 5,900 winners on the podium
  • 33,000 women triathletes competed – grown by 10% since 2009
  • 19,400 gave it a tri for the first time
  • Helped raise over £1,000,000 for charity
  • 1,750 primary school children, and 70 schools, taken part in the community tri training roadshows
  • 100 Keep Loyalty Club members (competed in ten or more races since 2014)

Throughout the year the Castle Triathlon Series will share stories about amazing inspirational people who having given it a tri with us over the last ten years and benefited from the experience; whether to help charity, their wellbeing or create a legacy.

Read more about The Castle Triathlon Series, Castle Run Series and Castle Swim Series here. All race entries are currently on offer at a 15% discount.

Race distances

Race distances

For the absolute beginners and children to the professional triathletes, the Castle Triathlon Series offers a wealth of race distances to suit all levels.

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Hosted at a selection of stunning and iconic castles across the UK, Ireland and France, the Castle Triathlon Series events all promise an inspirational and memorable race experience.

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Take part

We pride ourselves on offering a bespoke and tailored offering for all those wishing to take part and grateful for all those who want to be involved on the day.

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We would always recommend training in preparation for any event, but how much you do, and the style you take is down to you.

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