Sign up for £30 Fundraise £150

Royal Osteoporosis Society

Driving research into bone health to create a future without osteoporosis. Support this great cause and join the Royal Osteoporosis Society team taking part in Swim Serpentine Half Mile on Saturday 20 September. Sign up today for £30!

  • Sat 20 Sep 2025
The Serpentine Lake, London

Half Mile

08:15

Age 12 & over

Sign up £30

Fundraise £150

  • 0.5 mile lake swimming
  • T-shirt
  • Fundraising support
  • Fundraising materials
  • Dedicated contact
  • Submit fundraising up to 1 month after event

Event overview

Swim Serpentine is a swimming event that takes place in the world-famous Serpentine Lake in London's Hyde Park. There are four distance options to choose from, making this the perfect event for an enjoyable and memorable open water swim.

Highlights

  • Open water swimming event

    Brought to you by the organisers of the London Marathon.

  • Iconic Central London location

    Swim in the Serpentine Lake in Hyde Park, London's largest Royal Park.

  • Distances for all abilities

    Festival day with inspirational speakers, kit and like-minded folk.

This event is part of Swim Serpentine.

Event details

  • Event expo
  • Event village
  • Free venue entry
  • Spectators
  • Swim hat provided
  • Traders at event
  • Wetsuit optional
  • Wheelchair users

Location

  • Bag storage
  • Cafe
  • Toilets
  • Urban

Route

  • Distance markers
  • First aid
  • No headphones
  • Point to point
  • Wave start

Sustainability

  • Public transport links
  • Recycling
  • Sustainability policy

What's included

  • Medal

Entries

  • Age 12 & over
  • Entries not yet open
  • Charity entries open until 15/08/2025
  • Charity places
  • Enter online