As summer heats up, so does the Castle Race Series calendar — and we’ve got exciting updates for you this August.
The season finale at Hever Castle is fewer than 7 weeks away – a legendary weekend of triathlon, duathlon, multisport, running, and swimming not to be missed.
Looking ahead? 2026 entries are open now with 20% off – commit early and save on your next season of castle racing.
Relive the magic of Belvoir Castle, celebrate Bailey Matthews’ 10-year milestone, and discover how we’re growing the sport through partnerships like Women In Tri.
Need a wetsuit for Hever? Looking for adventure gear or a Swim Holiday? Want to join the Castle Race Series team or race for free in 2026? It’s all inside.
Scroll down and dive in — whether you’re racing, supporting, or spectating, we can’t wait to see you at the castle gates.
The stage is set for the UK’s most iconic multisport weekend at Hever Castle on 27–28 September.
End your season in style with a weekend full of: triathlon (including a 2026 Standard Distance Triathlon World Championship Qualifier race), duathlon, aquabike, aquathlon, runs, swims, and junior races — from first-timers to seasoned athletes.
Expect epic crowds, festival vibes, and your final medal of the season.
Secure your spot at the castle gates — book now.
For the second year running, more than 3,000 athletes and supporters gathered at the stunning Belvoir Castle for a truly unforgettable weekend.
From triathlon and multisport to swimming and running, our Leicestershire gem once again proved to be the perfect backdrop for an action-packed celebration of endurance and community.
Ready to commit to your next big challenge? We’re offering an exclusive 20% off all our 2026 race weekends – but only for a limited time!
In 2026 we race at Lough Cutra Castle, Ireland (23 – 24th May), Château de Chantilly, France (6-7th June), Cholmondeley Castle, Cheshire (20-21st June), Belvoir Castle, Leicestershire (18-19th July) and Hever Castle, Kent (29-27th September).
Whether you’re a seasoned athlete or looking to take on your first triathlon, now is the perfect moment to secure your spot and save. Don’t miss out – sign up today and make 2026 your strongest race season yet!
Communications & Marketing Manager
Love sport, events & creative marketing? Join Castle Race Series & Commando UK to lead campaigns, grow audiences, and bring the magic to life across the UK, France & Ireland.
Lead content, socials & digital, drive growth and work on iconic events.
A passion for sport & events is essential. Sound like your dream role? Get in touch!
Castle Race Series ambassador Bailey Matthews marked 10 years of racing with us by completing the Belvoir Castle Triathlon — continuing a summer of celebration and inspiration.
Dementia is the UK’s leading cause of death but 1 in 3 people with dementia are living without a diagnosis – keeping them from answers, treatment and extra time with the people they love.
Our new campaign Dementia Unseen is calling on the Government to prioritise dementia, and guarantee everyone the right to an early, accurate diagnosis.
If you believe in a fairer future for people with dementia, read more about our campaign and sign the petition.
We’re proud to be a Gold Partner of Women In Tri for 2025 and 2026 — supporting their mission to break down barriers and empower more women to participate in triathlon.
Together, we’re committed to making the sport more inclusive, accessible, and welcoming to all.
Hire your wetsuit from Adventure Kit Hire – from just £25.
Book a fitting (only 15 miles from Hever) or order online
Collect your wetsuit on-site at Hever on race day
Quality suits, flexible sizing
A sustainable and affordable way to race
Get 10% off with code CASTLE10
Simple. Sustainable. Race-ready.
It’s the busiest time of year for SwimTrek! There’s also special cause to celebrate with a new wave of departures and trips for next year’s calendar.
These include the first ever SwimHike in Ithaca, Greece – a chance to grab your goggles and hiking boots to adventure at sea and on land like never before.
Also, Costa Rica will return in 2026. Get ready for white sands lapped by warm Caribbean and Pacific waters, and sprawling jungles, which span a quarter of the country.
Swim, bike & run in custom kit that performs across every stage of your triathlon.
Designed for comfort, durability and performance, Scimitar tri suits are built to help you go the distance. Stand out on race day — download our triathlon brochure or request your free quote today.
Launched in 2018, Tri Wetsuit Hire set out to make triathlon more accessible, affordable, and sustainable. Starting with just 30 wetsuits, the business quickly expanded across the UK.
To grow year-round, new services followed — including Turbo Trainer, Kids Bike Trailer, Bike Box, Paddle Board, and Snow Clothing Hire. In response to growing demand, all offerings are now united under a single brand: Adventure Kit Hire — your one-stop shop for outdoor gear.
Create rich, branded business messages with images, video, buttons, and live updates – all inside your customer’s default mobile messaging app.
Engage your audience with personalised, dynamic content that drives action.
Want a free race entry next season? Join our Trading Places Scheme!
Volunteer for just one day at any of our events and earn a free race place at any Castle Race Series venue in 2026.
Enjoy free camping, exclusive perks, and a behind-the-scenes look at what makes race day magic happen.
Keep up to date with exclusive discounts, launches and news.
