For health and safety reasons for both the competitors and swim safety team we have to have cut-ff times in the water. These are as follows:

1 Mile – 90 mins

2.5K – 2 hours

5K – 3 hours

10K – 6 hours

Night Swim 1500m – 75 mins

Night Swim 750m – 60 mins

Night Swim 400m – 45 mins

Outside of these times swimmers will only be pulled from the water if they look to be suffering with the early symptoms of hypothermia.

2XU is our Official Swim Partner, offering a range of wetsuits created with winning combination of fabric technology and smart design helps 2XU’s elite triathletes across four continents optimize their performance both in training and during your race.

Find out more here

View 2XU top wetsuit tips here

Want to try before you buy on your next wetsuit? 2XU will be offering a 2018 season hire option on their new upcoming 2018 “Propel P:1” wetsuit. Event weekend, monthly and seasonal hire options available from just £25 and if you decide to keep your suit the rental fee will be taken off the purchase price!  Register your interest here

Arguably the finest castle in the series – Lough Cutra – provides a fitting backdrop for the curtain raiser of the 2018 Castle Swim Series. This first event sets the scene for a competitive and fun series, hosted within the beautiful grounds and surrounding area of stunning South Galway. At Lough Cutra Castle you swim in Europe’s largest privately owned lake. This event gives swimmers the exclusive chance to enjoy the magnificent lake and stunning castle estate.

Click here for information on our swim training day at the castle

The offering:

• 5K Swim

• 2.5K Swim

• 1 Mile Swim

Just a week after the Summer Solstice, the second leg of the 2018 Castle Swim Series will take place at Cholmondeley Castle during the long, bucolic days of June. Cholmondeley Castle Triathlon event attracts thousands of competitors and supporters to the beautiful countryside of Cheshire. The event offers the quintessential Castle Swim Series experience of competitive and fun racing, an epic castle backdrop and a stunning location.

Click here for information on our swim training day at the castle

The offering:

• 5K Swim

• 2.5K Swim

• 1 Mile Swim

With over 2000 competitors set to take on long distance challenges, this promises to truly be a Festival of Endurance. Set in the stunning Hever Castle estate, Spectators will have full access to view the entire course as well as enjoy the award winning venue and the event’s  festival of entertainment.

The offering:

• 10K Marathon Swim (NEW in 2018)

Entry tickets available to Individuals and Relay team of 5 (each team member takes on the 2k loop circuit). Register your interest here

• 3.8K Long Distance Swim

• 1.9K Middle Distance Swim

The Castle Howard event in July promises to be a memorable event on the southern border of the North York Moors. The rapturous reception afforded to previous Castle Howard Triathlons has led to this weekend event to be known as the sporting event of the North! The spectacular Great Lake offers a stunning picturesque backdrop for an exhilarating swim experience.

Click here for information on our swim training day at the castle

The offering:

• 5K Swim

• 2.5K Swim

• 1 Mile Swim

The Castle Triathlon Series makes its yearly pilgrimage over the English Channel in August for the fifth race of the 2018 series. Set over the UK bank holiday weekend and the end of August, the event takes place in the spectacular and historic town of Chantilly, just a 2.5hrs drive from Calais and 40 miles north of Paris. The Castle Swim will provide swimmers with the exclusive chance to take on one of the three distances in The Grand Canal in front of the Chateau.

The offering:

• 5K Swim

• 2.5K Swim

• 1 Mile Swim

The UK’s most stunning and sought after triathlon event is the finale of the both the Castle Swim Series and the UK triathlon season. Hever Castle Triathlon swiftly established itself as an essential destination for triathletes, garnering plaudits and media attention 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 and the lake and the unique swim route around the 13-acre island swimming in River Eden has been hailed as the ‘best open water swim ever’.

Click here for information on our swim training day at the castle

The offering:

• 5K Swim

• 2.5K Swim

• 1 Mile Swim

We have an exciting end of season finale event for you as part of our 10-year anniversary celebrations! On Saturday 22nd September, during the Hever Castle Triathlon weekend, we will host our first ‘Night Swim’. The new Night Swim promises an atmospheric and unique opportunity to swim under the stars in the iconic Hever Castle lake and river Eden.

Starting at 8pm, swimmers can enjoy one of three distances all untimed; 400m, 750m or 1500m. Accompanied by atmospheric lighting and classical music the event is a perfect accompaniment to a weekend triathlon, run or swim and will be a spectacle for spectators and participants alike.

All swimmers will receive a swim hat, glow-sticks and medal. Warm refreshments will be available along with a licensed bar for post-race warm down. The swimmers event village, set on the Italian lawn by the loggia, will be set up with a heated changing room and bag drop area.

Why not book a campsite plot and make a weekend of it? The campsite is within easy walking distance to the swim start and is set in the stunning castle grounds.

The offering:

• 1500m (16+)

• 750m (16+)

• 400m (8+ accompanied by an adult)