London Marathon Events, the organiser of the Swim Serpentine
Resources
Swim Serpentine takes place in Serpentine Lake in the beautiful Hyde Park and sees swimmers complete distances between a half-mile to six-miles.
In 2025, the event will return on Saturday 20 September.
Background
First held in 2016, Swim Serpentine is a one-day open water swimming event held in and around the beautiful Serpentine in Hyde Park.
It provides the rare opportunity to swim in the Serpentine lake, the same venue as the London 2012 Marathon Swimming Olympic event.
Swimmers aged 10 and up are invited to take on a half-mile, one-mile, two-mile or six-mile distance around the lake, with waves of swimmers setting off throughout the day.
The two-mile swim also forms part of the London Classics – a fabled sporting challenge comprising the three toughest London endurance events including the London Marathon, RideLondon 100 and Swim Serpentine.
| Year | Finishers | Men | Women | Non-binary |
|---|---|---|---|---|
| 2024 | 4897 | 2402 | 2486 | 9 |
| 2023 | 4154 | 2032 | 2110 | 3 |
| 2021 | 3530 | 1655 | 1875 | |
| 2019 | 4821 | 2325 | 2494 | |
| 2018 | 4387 | 2117 | 2270 | |
| 2017 | 3544 | 1765 | 1779 | |
| 2016 | 3003 | 1368 | 1635 |