Cholmondeley Castle | Castle Triathlon Series | Castle Triathlon Series

The Series

Cholmondeley Castle Triathlon

Arriving with the UK Summer Solstice, we are kicking off the 2021 Castle Triathlon Series with our event at Cholmondeley Castle in Cheshire during the long, bucolic days of June.

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Cholmondeley Castle Triathlon

Saturday 19th and Sunday 20th June 2021

The Cholmondeley Castle event attracts thousands of competitors and their supporters to the beautiful countryside of Cheshire, offering the quintessential Castle Series multisport experience of competitive and fun racing, an epic castle backdrop and a stunning rural location.

All races at the 200-year-old Cholmondeley Castle start by launching into an open-water swim in Deer Park Mere Lake. The bike route  circumnavigates Bickerton Hill, which is the southern most tip of the Peckforton Hlls. The stunning run courses passes through the estate grounds, which date back to the 12th Century.  Athletes will finish their Cholmondeley race experience by sprinting down the main lawn to the finish line with Cholmondeley Castle as a fitting backdrop.

About Cholmondeley Castle

The Cholmondeley Castle Triathlon takes place in the beautiful grounds of Cholmondeley Castle, where the Cholmondeley family have resided since the Norman era of the 12th Century.

The estate features extensive parkland covering 500 acres including two lakes, the larger of which, Deer Park Mere, is the setting for the open-water swim section of the triathlon and swim only events.

To the south of Cholmondeley Castle, Tower Hill is the highest point of the run section, where athletes will be rewarded with panoramic views of the Beeston and Peckforton Hills, which they will have just covered on the undulating bike section, with the Welsh Hills looming in the distance.

Please note that Cholmondeley Castle is a private residence of the Cholmondeley family and is not open to the public.

Socially Distanced Event Format

A safe way to continue racing together!

We organised a hugely successful socially distance event at Hever Castle in September 2020 for over 4000 participants and their supporters. This has given not only us, the industry but most importantly our participants the confidence to return to racing in 2021.

We want to reassure all participants that we’ll continue to work closely with governments, governing bodies, venues and suppliers to ensure that our 2021 events are run in accordance with current health and safety guidance.

Our increased health and safety measures cover 5 key principles of education; touch point reduction, density reduction, athlete self-reliance and enhanced hygiene.

Should we be require to put on a socially distanced event, participants will still get the full race experience but with individual rolling starts, 1 competitor every 10 seconds (sometimes greater), restricted time on site either side of your race and possible limit on spectators per athlete only.

We will prepare venue specific documents to send to all participants ahead of the event. These will include details on how to prepare pre-event, arrival timings and movements, swim, cycle, run, festival village and exit.

TENW Junior race series

Inter Regional Championships Qualifying draft legal race for the TENW triathlon team.


The Triathlon England North West Junior series returned for the second time to Cholmondeley Castle Triathlon in 2019. A draft legal event and IRC Qualifier on tarmac paths and we look forward to it’s return in 2021.

  • Individual 13 – 19 yrs – 300m/5km/2.4km. Includes Junior 17-19yrs, Youth 15-16yrs and Tristar3 13-14yrs.
  • Individual 11 – 12 yrs Tristar2 – 200m/5km/1.6km

“We are really excited for the Cholmondeley Castle Triathlon to be included in the NW Junior Series for 2019. Triathlon’s for children are very limited due to traffic free bike courses and this fantastic event ticks all the boxes. This year has a draft legal race for T2,T3,Youth and Juniors, which will give a great opportunity to race draft legal and great race qualifier experience for the Inter Regional Championships at Mallory park later this year. It’s also a great day our for the family and spectators with plenty to keep them occupied, supporting all the athletes at an amazing venue.” Paul Ekgren,TENW Senior Series Co-ordinator

Mixed Team Relay (including TENW Championship)

We were delighted that the Senior Mixed Team Relay, the new format used in the commonwealth games, also included the North West Championship event.

The race consists of four person teams; two males and two females, each completing a 250m swim, 5km bike and 1.5km run as part of a tag team.

Mixed Relay has proven extremely popular with athletes of all standards and allows regular age groupers and more advanced athletes to race together. The minimum age requirement for athletes is 15 years. There is no upper limit upper age limit or ability for those taking part.


Go long for the Gauntlet

The Gauntlet, half iron race pushes competitors to their limit via a 1.9km swim, 90km bike ride and 21km run and we look forward to it’s growth in 2021

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.

10K, Half Marathon and Marathon

Sunday 20th June 2021

Building on the growing success of the Castle Run Series established in 2018, our Marathon, Half Marathon and 10K runs will be returning to the iconic Cholmondeley Castle.

This stunning and unique multi-terrain course will incorporate spectator-friendly loops of Cholmondeley Castle, the Cheshire countryside and its quaint local villages. Each runner will be welcomed across the finish line with a banquet of well-earned treats, as well as a Castle Run Series medal to take home. On completing the run course, you can enjoy live music, food stalls, a retail area, and camping in the castle grounds, to make a weekend festival of sporting achievements.

Multisport Distances

Duathlon, Aquabike, Aquathlon (Standard and Sprint)

If the thought of completing all three disciplines at once is holding you back from signing up to one of our events, our 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. We have created the multisport events to allow our competitors to compete in two disciplines of your choice within our triathlons. The same stunning courses tailored to suit you!

Castle Swim Series

Saturday 19th June 2021

The swim only event provides the choice of three different distances: 5km 2.5km and 1mile (see price table below) and boasts a unique and stunning swim route in all the stunning castle lakes.

The swim described by many triathletes as the ‘best open water swim ever completed’ will now be open to outdoor swimmers as an event in its own right.

All swimmers will be provided with timing chips and the races categorised into wetsuits and non-wetsuits. Prizes will be awarded for the top three male and female competitors in each distance.

One mile leisure and family swim

Enjoy the beautiful setting of Cholmondeley Castle at your own pace. Swim any stroke you like (breaststroke encouraged), swim and chat with friends as you go around. Don’t worry about how long it takes (however time limit set at 90 minutes), just enjoy it. Under 16s welcome if accompanied throughout by a competent responsible adult.

Junior Triathlon 9 - 16 years

From jumping in a lake, cycling through woodland trails or closed roads to running around the exciting castle grounds, we pride ourselves on offering unforgettable, accessible races for all abilities of 9–16 year olds at five amazing locations in England, Ireland and France. There are very few triathlon events where children, teens, and adults are able to participate at the same event making the most of these family friendly sporting festivals.

Ensure you bring the correct bike for your junior event at the Cholmondeley Castle Triathlon:-

On Saturday all junior cycle routes will be tarmac closed roads.

On Sunday all junior cycle routes will be multi terrain and we strongly advise the use of off road tyres. See our take part page for Junior Triathlon Tips and hints.

Scroll down for age group categories and distances. (These have been changed for 2021 events).

Wow! What a great event Cholmondeley was again! Well organised, a strong competitive field, yet an intimate and friendly event. We are looking forward to trying out some of the other venues.
Paul Howarth

To compete in the Cholmondeley 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 19th June 2021

Race Name
Race Distance
(Individual / Relay)
Discount Prices
(Individual / Relay)
Start time
Sprint Plus - The Marquess
800m / 44km / 8km
£95 / £140
£81 / £119
750m / 22km / 5km
£90 / £135
£77 / £115
Super Sprint - The Gothic
400m / 22km / 4km
£85 / £130
£72 / £111
Starter - The Castle
200m / 14km / 2.5km
£70 / £110
£60 / £94
5K Swim
2.5K Swim
1 Mile Swim
1 Mile
Aquabike Sprint (Swim / Bike)
750m / 22km
Aquathlon Sprint (Swim / Run)
750m / 5km
Duathlon Sprint (Run / Bike / Run)
5km / 22km / 2.5km
Youth (15-16 yrs) - The Chestnut
500m / 8km / 2.4km
£44 / £55
£42 / £47
Junior T3 (13-14 yrs) - The Chestnut
400m / 6km / 2.4km
£44 / £55
£37 / £47
Junior T2 (11-12 yrs) TENW
300m / 4km / 1.6km DRAFT LEGAL ONLY
£39 / £55
£33 / £47
^Family mixed relay
250m / 4.2km / 1.5km
£75 (team)
£64 (team)
^Adult mixed relay
250m / 4.2km / 1.5km
£120 (team)
£102 (team)

*This event is currently set up for socially distanced format, whereby we will adopt a rolling start. Therefore the above timings represent the time the first person sets off in that particular distance.  These are approximate timings and are only to be used as a guide at this stage. 

Entrants will be notified of their wave time via email approximately 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.

Saturday Junior events (11-16 years) begin with DRAFT legal waves for TENW participants (bike restrictions apply), followed by 13-14 years and 15 -16 years NON draft legal waves. All Saturday Junior cycle courses take place on full tarmac closed roads.

Sunday 20th June 2021

Race Name
Race Distance
(Individual / Relay)
Discount Prices
(Individual / Relay)
Start time
Half Iron / Middle Distance - The Gauntlet
1.9km / 96km / 21km
£220 / 270
£187 / £230
Olympic / Standard- The Cholmondeley
1500m / 44km /1 0km
£110 / 150
42.2 km
HALF Marathon
10 km
Aquabike Standard (Swim / Bike)
1500m / 44km
Aquathlon Standard (Swim / Run)
1500m / 10km
Duathlon Standard (Run / Bike / Run)
10km / 44km / 5km
Junior (11-12 yrs) - The Oak
300m / 4km / 1.6km
£39 / 55
£33 / £47
Junior (9-10 yrs) TS1 - The Cedar
200m / 4km / 1.3km
£33 / 55
£28 / £47

*This event is currently set up for socially distanced format, whereby we will adopt a rolling start. Therefore the above timings represent the time the first person sets off in that particular distance.  These are approximate timings and are only to be used as a guide at this stage. 

Entrants will be notified of their wave time via email approximately 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.

Sunday Junior cycle courses are NON DRAFT and take place on multi-terrain surfaces, therefore better suited to off road tyres. TENW participants are invited to take part in these waves.

^Distance slightly varies at each venue.


Race day information

Two weeks prior to event, this section will give you everything you need to know about race day, including wave times, registration opening details, spectator entry, camping info and water temperature readings etc.

Results and photos

Find the Races Results from previous years, along with amazing shots of participant’s photography during the event.

If you have any queries please contact Stuweb Timing Solutions here.

Useful information

Race licence

The Castle Triathlon Series UK events are governed by the British Triathlon Federation and their technical officials will provide guidance on the day and in the run up to the event.

On race day, all  participants involved in a multi-discipline sport are required to produce a valid triathlon governing body membership card or purchase a Day Licence. The Day Licence must be purchased online prior to the event. Details will be sent out closer to the event.

Competitor Photography

PRE-Race day offer! AWOL Adventure photography team will be positioned around the course, finish line, and event village ready to capture that timeless photo – Just don’t forget to SMILE!

Pre-order your digital bundle of pictures for a special HALF PRICE DISCOUNT. Here’s how it works…..

ALL your Digital Photos for for half price
Min. 2 photos GUARANTEED or your money back*
Bundle goes to full price after the event so hurry!

*Click here for quick FAQ and details of Awol Adventure guarantee

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.

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.

Travel, accommodation and directions to the venue

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

Trophies, prize money and medals

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

Each 1st place winner will also receive a suitably themed trophy, and sponsor’s prizes for 2nd and 3rd place. There is a significant prize pot on offer for the Olympic and Gauntlet race distances.

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

Water quality and temperature

Please see water quality tests for Cholmondeley Castle’s lake. All tests are undertaken using the EU Water Bathing Directive as the benchmark.

Water temperature

For swim length up to 1500m wetsuits will be optional on race day if the temp remains between 14 and 22 degrees centigrade and over 1500m swim length wetsuits will be options between 15 and 23 degrees centigrade.

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; from first timers, old timers, juniors, female focus, elites, tri clubs, corporates, there’s a race for everyone!

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Trade your time for a free race place! We offer a Volunteer Scheme, whereby a free race is given in return for a day’s marshalling at any one of the Castle Triathlon Series events. (terms apply)

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