Swim Serpentine 2026

Swim Serpentine is an open-water swim in the Serpentine Lake, Hyde Park, London, with the event based around Hyde Park Corner. It takes place in September and offers four distance options, from a shorter challenge to a two-mile swim. The one-mile version is approximately 64 lengths of a standard pool, offering pool swimmers a way to visualize the effort before entering open water. The course utilizes the lake within Hyde Park. Longer distances involve additional laps rather than extending the course outside the park. Charity participation is significant: SignHealth uses the one-mile challenge to raise funds for deaf health services, and Sue Ryder offers two-mile places with a registration fee and fundraising goal. The two-mile swim also counts towards the London Classics; participants who have completed the London Marathon and RideLondon 100 can earn an additional London Classics medal by finishing it.