Swim Serpentine photo

Swim Serpentine

Event Type Swim
Date 26/09/2020
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

Important update: Swim Serpentine has been cancelled due to the COVID-19 (Coronavirus) situation in the UK. We're so sorry to hear this and we know how disappointing this must be for you. To see the event organisers full statement please click here.

If you would still like to take on a challenge for us, please see the rest of our events here.

The challenge

Swim Serpentine is a one-day open water swimming festival staged in the heart of London. 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. Join us on 26 September for the forth year of this fantastic event.

We will have charity places available in the 1 mile and 2 mile distances.

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.

The route

One mile Swim

A classic distance in the world of open water swimming events. Children with Cancer UK Swim Serpentine takes place on the same course as the London 2012 Marathon Swimming Olympic event, with one full lap around the Serpentine making up the one-mile swim. This is the most popular of all the swim distances at Children with Cancer UK Swim Serpentine with swimmers taking anything from 20 minutes through to one hour to complete the swim.

Two mile Swim

For those who would like to test themselves with two full (1.6km) laps of the Serpentine. Aimed at more experienced swimmers who have already completed a mile open water swim previously. A challenging two-lap swim set in a beautiful location.


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.

You will receive a welcome pack with fundraising help and materials as well as support from our dedicated events team to help you achieve your goals. If you reach over £100 6 weeks before the event we will automatically send your a free swimming cap.


Can I choose my start wave?

 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.

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

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

Do I have to wear a wetsuit

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..

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

We will send you a fundraising pack after registration.

What time does Swim Serpentine start?

The start time for the 2020 event will be announced in due course.

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

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.

Is there parking available on the day?

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’ website for more information on other parking in Hyde Park. We recommend that swimmers and spectators avoid coming by car as parking spaces are limited.

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