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.


1,500 Take on the Epic Challenge of the Festival of Endurance at Hever Castle

1,500 Take on the Epic Challenge of the Festival of Endurance at Hever Castle

July 10, 2018

Hundreds of swimmers, runners and cyclists took part in the The Festival of Endurance at Hever Castle last weekend as the competition continued to grow, despite a weekend of unforgiving conditions. A barmy 26 degree open water swim in the stunning Hever Castle lake and connecting estuary, meant a no wetsuit policy; for some adding to the challenge of endurance swimming and racing.

Meanwhile, out of water temperature mirrored that of the lake, with Aquabike and Aquathlon competitors also enduring a repressive 30 plus degree environment for 10.5K and 21K runs, or 60K or 120K cycle routes.

Despite the epic challenge, the race saw a number of course records broken and an increase field that created a festival environment throughout what was a long day for many competitors.

See the full results here.

Founder of Outdoor Swimmer, Simon Griffiths commented on the 10K swim he completed: “This was a fun and varied swim in a beautiful setting. The river section feels really adventurous as you wind your way through lilies and duckweed, plus there’s a notable drop in temperature. Then in lake, it warms up and you can stretch out for the long straight section into the rising sun. We’re looking forward to coming back in September.”

A Channel 4 production crew were at large with 10 cameramen covering the swim course and swim in preparation for the event being featured in a bespoke programme set to be broadcast on the 4th August 2018.

Sign up now for Festival of Endurance 2019 (7th July) and enjoy an early bird 30% discount.

The Castle Swim Series now prepares for its next event at Castle Howard on Saturday 21st July and has also just announced a new Night Swim at Hever Castle on Saturday 22nd September 2018. Sign up now.

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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