The Series

Hever Castle Triathlon

The UK’s second biggest triathlon, the world’s largest children’s triathlon and the finale of both the Castle Tri Series and the UK triathlon season.

Hever Castle Triathlon

Saturday 24th and Sunday 25th September 2016

In just seven years the Hever Castle Triathlon has established itself as an essential destination for British and international triathletes and the mainstream media, for its picture postcard venue, elite action, age-group choice and festival atmosphere. Put simply, instant classic doesn’t do the Hever Castle Triathlon justice.

With no fewer than 16 race choices on offer, 7,000 triathletes ventured to Hever Castle in September 2015, with entries increasing for the seventh year running. To cement the race’s title as the world’s largest children’s triathlon 1,600 youth athletes took part in September. As in previous years, the children’s races are split over two days (8-10 year olds on Saturday afternoon and 11-15 year olds on Sunday afternoon).

For 2016, the Gauntlet Half Iron Distance will be back with a vengeance; over 850 signed up for the perfect September autumn day in 2015.  For the third year running the long-distance Bastion is returning to Hever Castle on Sunday 10 July 2016.

The races will again commence with an open-water swim in the spectacular 38 acre Hever Castle Lake and River Eden, transitioning into the undulating cycle that takes athletes around a circuit through the High Weald of Kent, an Area of Outstanding Natural Beauty, and up to the stunning Ashdown forest for the longer distance races. The largely off-road run circumnavigates the estate and award-winning castle grounds before athletes make the dash to the tree-lined finishing chute beside the lake.

Hever Castle Triathlon 2014/2015 - Stunning course for all levels of triathletes

About Hever Castle

Famous for its links with the Tudors, particularly Henry VIII, there have been three main periods in the construction of this historic castle.

The oldest part of the castle dates to 1270 and consisted of the gatehouse and a walled bailey. In the early 1500s the Bullen family acquired the castle and added a Tudor dwelling within the walls. Hever Castle was also the childhood home of Anne Boleyn, the mother of Queen Elizabeth I.

In 1903, William Waldorf Astor restored Hever Castle, building the Tudor Village and creating the gardens and Hever Castle Lake, which plays host to the swim section of the triathlon and took 800 men to dig by hand and took two years to construct.

Since 1983, the castle has been owned by Broadland Properties and is now open to the public. The castle itself houses historic 16th Century Tudor portraits, furniture and tapestries, and two magnificent prayer books inscribed by Anne Boleyn.

Film buffs will note that Hever Castle provides the a backdrop to 1987’s fairytale comedy classic The Princess Bride, starring Cary Elwes and Robin Wright, and 2008’s Inkheart with Brendan Fraser.

Go long for the Gauntlet

The 2015 Hever Castle event witnessed over 850 hardy triathlete taking on the exciting Gauntlet, a middle-distance race that pushed competitors to their limit via a 1.9km swim, 90km bike ride and 21km run.

The race distance had a hugely successful launch in 2013 at the Chateau de Chantilly and Hever Castle Triathlons, with hardened triathletes and newcomers to the triathlon and middle-distance racing side-by-side on the start line.

I absolutely LOVED the new swim course! That was a fab alteration, and made the swim so much more interesting than most of the other swims you get at UK events. Will definitely be back to race next season, I think I may even take on the Iron distance event early season... We\'ll see!
Eli Thorogood

Race distances and pricing

To compete in the Hever Castle Triathlon you can enter either as an individual, a relay team of two, or a relay team of three. The Junior and Children’s races follow the same format. Relay entries can be all male, all female or mixed.

Saturday 24th September 2016

Race Name
Race Distance
(Individual / Relay)
Start time
Sprint Plus - Henry VIII
£80.00 / 130.00
Super Sprint - Anne Boleyn
£70.00 / 120.00
**Starter Sprint - New Race Distance
£60.00 / 105.00
Children (8-10 yrs)
£30.00 / 50.00

**New adult race distance, ‘Starter Tri’ is being introduced in 2015. Youth’s under the age of 16 can apply, but would need a consent form as the cycle leg of this race take place on the roads. For more details contact the office.)

Sunday 25th September 2016

Race Name
Race Distance
(Individual / Relay)
Start time
Half Iron / Middle Distance - The Gauntlet
£180.00 / 240.00
Olympic / Standard - The Hever
£90.00 / 140.00
Junior (13-15 yrs) - Elizabeth 1st
£40.00 / 50.00
Children (11-12 yrs) - Elizabeth 1st
£35.00 / 50.00

*Start times are approximate and shown here as a general guide. These are subject to change.  Depending on numbers, there will be multiple waves for each race distance, usually separated by 15 to 20 minutes.

Entrants will be notified of their wave time via email 2 weeks prior to the event.  We advise that entrants arrive at least 1 – 1.5 hours before their wave time.  There’s an option to request specific waves during registration.  Relays go off in the final wave of their distance.


Congratulations to everyone who took part in the 2015 triathlon festival! We hope to see you in 2016.

This section will provide you with the 2015 race time results and links to competitor photography.

Race day information

Two weeks prior to the 2016 event we will upload here all information you need to know about the race day, including water temperature, wave start times, camping details and more.

Useful information

Preparation for the event

Please download our new 2015 Competitor Guide tailored for the event at Hever Castle that will help guide you through the preparation for the event.

The Hever Castle Competitor Guide 2015
The Hever Castle Gauntlet Competitor Guide 2015
Trophies, prize money and medals

All competitors in all races will receive a medal on completion of their race.

Each winner will also receive a suitably themed castle knight trophy and there is a significant prize pot on offer for the Olympic, Gauntlet and Bastion race distances.

Click below to find out more about what we have on offer.

Spectator Offering

The spectator experience at the Castle Triathlon Series has become almost as famous as the spectacular backdrops and classic courses, and has made passing time before your loved ones finish the race a thing of the past.

Travel, accommodation and directions to the venue

Click the link below to find out everything you need to know about all of our venues.

Rules and Terms and Conditions

Please read and understand the general rules, in particular the cut-off times, before competing to ensure a fantastic race for you and everyone else.

Water quality

Please see water quality tests for Hever Castle lake taken in September 2015. All tests are undertaken using the EU Water Bathing Directive as the benchmark.

Water temperature

This will be taken nearer the Event, and posted on the Race Admin page.


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.

Find out more


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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