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Hever Castle Triathlon and Sport Festival

Event details


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Over 7000 participants of all abilities will compete in the greatest range of fitness and endurance events. The Hever Castle Triathlon weekend is absolutely epic. Expect the most amazing atmosphere, expect to take on awesome courses and expect all the amenities a participant needs.
C-19 Plan
Castle Triathlon Series has confirmed that this event will be going ahead as planned on Friday 24th Sep 2021 in accordance with the COVID-19 safety measures. Learn more

Review summary

4 Reviews
  • Course
  • Organisation
  • Atmosphere


Manon V
"This was my first ever triathlon, and it was such a good one to do! The swim is..."


Anna F
"My first Triathlon happened here and it was a great choice although the entry..."


Paul D
"The weather let the day down. So much water on the ride. Wich turned into mud..."
See all reviews

How to enter the Hever Castle Triathlon and Sport Festival

  1. Sprint Plus

    Triathlon: Swim 0.8km, Bike 40km, Run 8km
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  2. Super Sprint

    Triathlon: Swim 0.4km, Bike 20km, Run 4km
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  3. Starter Tri

    Triathlon: Swim 0.2km, Bike 15km, Run 2km
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  4. Half Iron - Gauntlet

    Triathlon: Swim 1.9km, Bike 90km, Run 21km
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  5. Olympic

    Triathlon: Swim 1.5km, Bike 40km, Run 10km
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  6. Aquathlon Sprint

    Aquathlon: Swim 0.75km, Run 5km
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  7. Aquabike Sprint

    Aquabike: Swim 0.75km, Bike 20km
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  8. Sprint

    Triathlon: Swim 0.75km, Bike 20km, Run 5km
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  9. Duathlon Sprint

    Duathlon: Run 5km, Bike 20km, Run 5km
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  10. Junior Triathlon (9-10 yrs old)

    Triathlon: Swim 0.2km, Bike 4.2km, Run 1.3km
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  11. Duathlon Standard

    Duathlon: Run 12km, Bike 40km, Run 4.3km
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  12. Aquabike Standard

    Aquabike: Swim 1.5km, Bike 40km
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  13. Aquathlon Standard

    Aquathlon: Swim 1.5km, Run 10km
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  14. Junior Triathlon (13-14 yrs old)

    Triathlon: Swim 0.4km, Bike 8.4km, Run 2.5km
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  15. Junior Triathlon (11-12 yrs old)

    Triathlon: Swim 0.3km, Bike 4.2km, Run 1.8km
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  16. Junior Triathlon (15-16 yrs old)

    Triathlon: Swim 0.5km, Bike 8.4km, Run 2.5km
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  17. 1 Mile Swim

    Swim 1mi
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  18. 2.5k Swim

    Swim 2.5km
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  19. 5k Swim

    Swim 5km
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  20. 10k Run

    Run 10km
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  21. Half Marathon

    Run 13.1mi
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  22. Marathon

    Run 26.2mi
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Hever Castle Triathlon and Sport Festival routes


An open-water swim in the spectacular 38 acre Hever Castle Lake and River Eden

An 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 as well as taking runners through land owned by the Bellhurst Nature Conservation Trust (the majority of this section is not on public rights of way), then returning to the award-winning castle grounds before athletes make the dash to the tree-lined finishing chute beside the lake.


Hever Castle witnesses hundreds of hardy triathletes 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.

If the promise of a cycle up the Burren’s Corkscrew Hill in Ireland, a swim in the iconic Chateau Grand Canal or a half marathon though the historic grounds of Castle Howard whets your appetite, see below for a detailed course description of each of our five Gauntlet races.


If the thought of completing all three disciplines at once is holding you back from signing up to one of triathlon events, then the multisport distances could be perfect for you! Perhaps an injury is preventing you from running, you can’t get your hands on a bike for this summer or the idea of swimming in the lake is just too much. Castle Triathlon Series have created the multisport events to allow the competitors to compete in two disciplines of your choice within the triathlons. The same stunning courses tailored to suit you!

Our junior event witnesses a 300m lake swim before a challenging but hugely fun off-road 8km cycle around the Castle grounds.

The junior race concludes with a 4km trail run around the castle grounds.


For the tweens out there, the Castle Triathlon Series offers a 200m open-water swim in a calm castle lake, a 4km off-road bike in the castle grounds before a 2km trail run finale.


The shortest event in our celebrated children’s races begins with a 100m open-water swim before a 4km bike on traffic-free trails around the Castle grounds.

The race climaxes with a 1.3km run, again on a safe off-road course. One parent is allowed in transition with their children to offer some assistance.

Event Details

  • Chip timed
  • Prizes
  • All competitors in all races will receive a medal on completion of their race
  • Banquet of well-earned treats
  • Live bands
  • Food stalls
  • A retail area
  • Camping at the castle making the weekend a festival of sporting achievements.
  • Licensed race
  • Trophies
  • Prize money
  • Hever Castle Speakers Tent
  • Marshal's
  • Baggage Drop
  • Race photography
  • Event Village


Please see the event website for more information.

The previous years start timings for the various Sprint events took place between 07:30 and 14:30. The Starter Tri, Children and Swim only events started between 15:00 and 17:00.

If Covid restrictions dictate, they shall follow a similar format at this Venue. If social distancing is not required, all adults events will take place in the morning and Children and Mixed Team Relay events after 14:00.

Entrants will be notified of their start time via email 2 weeks prior to the event. It is advised that entrants arrive at least 1 – 1.5 hours before their given wave time. Relays go off in the final wave of their distance.

See a full list of Castle Triathlon Partners at

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.

Spectators are actively encouraged to come down to the event! The looped nature of the course makes it very spectator friendly.

There will be a variety of entertainment on offer, with a festival theme throughout, such as inflatables, climbing wall, yoga and retail outlets.

Please follow this link for more information on spectators -

If you'd like to sign up, or find out more, please visit

Frequently Asked Questions

When will I be sent my start time for the Hever Castle Triathlon and Sport Festival?
Participants will be emailed their start time approximately 2 weeks ahead of the event.
Is it an open water swim at the Hever Castle Triathlon and Sport Festival?
Yes, the swim will take part in the lake.
Is the water quality at the Hever Castle Triathlon and Sport Festival good?
Water quality reports are conducted by EU Water Bathing Directive and can be found on their website.

Meet the organiser

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Formed in 2009, the Castle Triathlon Series has swiftly established itself as the UK’s largest triathlon series. From Lough Cutra to Chantilly and Castles Howard, Cholmondeley and Hever, we’re immensely proud of the iconic backdrops to each Castle Triathlon Series race and the friendly festival atmosphere produced at every event.


Hever Castle Triathlon and Sport Festival reviews (4)

4.5 out of 5 stars

  • Course
  • Organisation
  • Atmosphere
  • Did the Half Iron - Gauntlet in 2019

    The weather let the day down. So much water on the ride. Wich turned into mud on the run. This event was an exercise in doing it anyway.
  • Did the Sprint in 2019

    My first Triathlon happened here and it was a great choice although the entry is a bit pricey and the medal is not the nicest one (quite small) unless you pre-order a personalised one which I am waiting for.

    I had sprint (750/20/5) but have done over 28k in total as transitions were a bit longer.

    Swimming part - I stayed way too back as a beginner which turned out to be mistake get with others just stay few metres behind, not too far. Water was cold for me but that was because I didn’t have the proper wetsuit. It was easy to follow with enough marshals on kayaks around.

    The beginning of the cycling course does not start on the road but a muddy/small rocks pathway thus it was a bit difficult but it’s its ashort phase..

    The cycling road was surprisingly hilly and there was no traffic closure so sometimes it was a bit challenging with cars queues behind slower cyclists. Passing sometimes difficult due to traffic and narrow countryside roads but lovely sceneries.

    Run was in laps (2X2.5km) it was definitely trail so pick the right shoes. Overall great experience, however, if you are looking for a Triathlon to make PBs - this one is way too hilly.

    I recommend for beginners as I found it as a great choice. Enjoy!

  • Did the Olympic in 2015

    This was my first ever triathlon, and it was such a good one to do! The swim is good for people who are bad at sighting (like me), because you always stay around the edge of the lake, and pass through some narrow areas which help you swim in a straight line. The cycle route is a bit rolling and really beautiful, and the run is green and nice.
  • Did the Super Sprint in 2017

    Lovely course, great atmosphere and feels really busy. Great post race experience/village as well...
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Tickets £23–£203