Swim Serpentine

Event Type: Swim
Date: 21/09/2019
Location: Serpentine, Hyde Park
Registration Fee: 1 mile - £20, 2 mile - £25
Fundraising Target: 1 mile - £200/person, 2 mile - £300/person
Level: Moderate to Tough


Thousands of swimmers will have the chance to swim a half mile, one mile or two miles in open water in the mass-participation event. Every swimmer will be able to choose a start wave, with swimmers setting off at regular intervals during the day. All your needs are catered for with heated changing rooms, dunk zone, pontoon start and finish, full water safety crew, hot tubs and exhibition area.

Sign up for a charity place

We have charity places available in the 1 mile and 2 mile distances. We ask for a registration fee of £20 for the 1 mile and £25 for the 2 mile. We also ask that you raise a minimum sponsorship amount of £200 - 1 mile or £300 - 2 mile.

*We have now sold out of 2 mile places, please email [email protected] to be added to the waiting list. Places in the 1 mile are still available.

Already have your own place?

If you've purchased a place through the race organiser, you can still choose to fundraise for us. Simply click the 'I have my own place' button and fill in our short form. There's no minimum sponsorship target if you've purchased your own place, and we'll be here to support you throughout your challenge.


Swim Serpentine is a one-day open water swimming festival staged in the heart of London.

Organised by London Marathon Events, the festival is held in and around the beautiful Serpentine in Hyde Park, the venue for the open water swimming competition at the London 2012 Olympic Games.


Join us on 21 September for the third year of this fantastic event.

When you fundraise for us, you’ll receive:

  • a free swimming cap to wear on the day
  • a welcome pack with fundraising help and materials
  • support from our dedicated events team to help you achieve your goals

If you haven't received all the information you need, you can give us a call on 0330 333 0804

Swimming in open water is very different to swimming in a pool. Therefore it is crucial that you train properly before the event regardless of whether you will be swimming in a wetsuit or not. Start off gradually and build up your distance.

You should try to swim at least two times a week and ideally three (one of these should be outdoors where possible).  

To train for an open water swim, you need to think about two aspects of the event:

  1. Being swim fit: the easiest way to become swim fit is to regularly use a swimming pool or lido.
  2. Being acclimatised to swimming outdoors: on the event day it could be cold or a bright sunny day, and the water could be calm or choppy. You should be comfortable swimming in all conditions.

For advice,training plans and the best gear to use check out the Swim serpentine website.

See more about training plans and gear.

You can also get in touch and trade training tips/experiences with other swimmers taking part in Swim Serpentine via our Alzheimer's Society Swim Serpentine Facebook group.

Q. Can I choose my start wave?

A. We’ll send you an email asking you to choose your wave, so you’ll be able to swim with friends and family if you’d like to. If you do not choose a wave, you will be allocated one based on your predicted finishing time.

Q. What level of swimmer do I need to be to enter the mass-participation swim?

A. You must be able to comfortably swim your chosen distance in open water, or double the distance in a pool non-stop.

Q. Do I have to wear a wetsuit

A. Wetsuits are optional when the water temperature is over 15 degrees. However, for safety reasons, all swimmers in the event must either wear a wetsuit or use a tow-float.

Wetsuits, swimwear and swim accessories are available to hire or purchase from HUUB Design. Visit the HUUB Swim Serpentine page for more details.

A small number of wetsuits and tow-floats may also be available to hire/buy on the day..

Q. Do I have to collect a registration pack or will this be sent to me through the post?

A. We will send you a fundraising pack in your welcome email, whilst Swim Serpentine will send you their own registration pack through the post.

Q. What time does Swim Serpentine start?

A. The start time for the 2019 event will be announced in due course.

Q. What's the best way to get to the serpentine?

A. We recommend that you travel on the Tube. The closest Tube to the event area is Lancaster Gate on the Central line. Alight here and the event area is a 700m walk across Hyde Park. You can also alight at Marble Arch (Central line), Hyde Park Corner (Piccadilly line) or Knightsbridge (Piccadilly line) and the event area is around 1km from each Tube station. For bus information, visitwww.tfl.gov.uk.

Visit the Royal Parks website to find out more about getting to Hyde Park.

Q. Is there parking available on the day?

A. Triangle Car Park, adjacent to the Serpentine at the north end of Serpentine Bridge, will not be open over the event weekend. Visit the Royal Parks’ websitefor more information on other parking in Hyde Park. We recommend that swimmers and spectators avoid coming by car as parking spaces are limited.