Swim Serpentine – Swim for a Cause in 2026

General entries for this year’s Swim Serpentine sold out faster than ever, but you can still be part of London’s iconic open-water festival. By securing a charity place, you’ll not only join thousands of swimmers in Hyde Park on Saturday 19 September 2026 – you’ll also make a real difference for a cause close to your heart.

Swim Serpentine offers four distances, from the welcoming half-mile to the mighty Super Six, giving swimmers of every level the chance to take on London’s most celebrated open-water course. Whether you’re dipping your toe into your first open-water event or taking on a huge personal challenge, there’s a swim with your name on it.

Choosing a charity place means your swim goes further. Every stroke you take helps raise vital funds for organisations that rely on your support. It’s your chance to turn an unforgettable day into long-lasting impact.

Chasing the coveted London Classics medal by completing the two-mile swim? Or taking on a single lap just for the joy of it? Whatever your goal, you’ll enjoy brilliant event-day support – from expert water-safety teams to a buzzing event village – and the knowledge that you’re helping others through every metre.

Make 2026 the year you swim with purpose. Secure a charity place today and dive into something truly meaningful at Swim Serpentine this September.

Explore the charity listings now to find your cause and claim your place: londonmarathonevents.co.uk/swim-serpentine/swim-charity