Hever Castle Triathlon, Hever, Kent

Hever Castle Triathlon 2026

Hever, Kent
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26 – 27 September 2026 Triathlon Sprint · Olympic · Half Season closerHillyStunning

The world's biggest castle triathlon and the traditional end of the British season. A lake-and-river swim, a genuinely lumpy Kent bike, and a run through the castle grounds.

Terrain
Mixed
Country lanes, trail-ish run sections
Elevation
Hilly
480m gain · Kent does not do flat
Entry
£89+
Variable
Swim
Lake
Castle lake and river loop
Wetsuit
Wetsuit-legal
usually 13–16°C
Region
South East
Hever, Kent
Your runway

7 weeks to race day: the sharpening window

A full build no longer fits, but a sharp one does. This close in, the job is specificity and freshness: race-pace touches, open-water or brick rehearsal, and a taper your nervous system actually absorbs. No heroics; arrive fresh.

R
Recover
Fix the nervous system first. Sleep, HRV, and the noise out.
A
Align
Fit the plan to your actual life, not the one you wish you had.
C
Condition
Minimum effective dose. The right sessions, done fresh.
E
Execute
Race-week protocol, pacing, contingency. Nothing new on race day.
Predict your finish time The 70.3 training plan

Building for this one? 70.3 training plan covers the sessions, the weekly shape and how the block is paced. The R.A.C.E. Framework explains why it is built that way.

Abraham Spring, founder of Unbroken

“The season closer. Hilly, honest, and beautiful. Race it for the day out, not the PB.”

Abraham Spring: founder, Unbroken

The race

Hever closes the season the last weekend of September. The swim starts in the castle lake and finishes up a river channel, which is unlike anything else in British racing. The bike is rolling-to-hilly Kent lanes where gearing and pacing matter. The run mixes estate paths and trail. It is not a PB course and does not pretend to be: it is the race you do because you love the sport.

Questions, answered

When is Hever Castle Triathlon 2026?

Hever Castle Triathlon takes place on 26 – 27 September 2026.

What distances can I race at Hever Castle Triathlon?

Sprint · Olympic · Half. Pick the distance that fits your training runway, not your ego: the right distance is the one you can arrive at fresh.

How hard is the course?

Mixed terrain, hilly profile with around 480m of climbing. Kent does not do flat

What is the swim like?

Castle lake and river loop. Wetsuit-legal, usually 13–16°C. Practise open water before race week, not during it.

How long do I need to train for it?

From today you have 7 weeks. Focus on sharpening and freshness rather than fitness you can no longer build.

How do I enter?

Entries are handled by the organiser, from £89. Use the Register button above: it goes straight to the official site.

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Photograph of Hever, Kent: Peter Trimming, CC BY-SA 2.0, via Wikimedia Commons. Not official race photography.

This listing is for information only. Unbroken is not affiliated with, endorsed by, or sponsored by Hever Castle Triathlon or its organiser. Details are based on publicly available information; names are used descriptively to identify the event. For accurate, up-to-date information and to enter, always use the official event website.

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