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Swim Serpentine

The 2021 Event

Date: Saturday 18th September

Distances: Half, one or two-miles

Location: Swim Serpentine in Hyde Park is suitable for your first open water swim or for experienced swimmers. As well as the actual Swim itself, there are plenty of entertainment and activities, making it a fantastic and unmissable day out for the whole family.

Fundraising: We ask that you commit to raising a minimum of £300.

Striped dolphin © Luke Rendell

Half Mile Swim

Half a lap of the Serpentine with plenty of time to swim at your own speed or for a first open water event. An achievable but, for some, still challenging swim.

Humpback whale spyhop

One Mile Swim

A classic, and the most popular, open water distance covering one full lap of the Serpentine.  Swimmers usually take between 20 and 60 minutes to complete it.

Breaching orca

Two Mile Swim

Only for experienced swimmers who have previously completed a one-mile open water swim and who really want to test themselves. Two full laps of the Serpentine.

How to apply for 2021

We have 10 places for this year's event.

To register your interest please email with the following information, including 'Swim Serpentine 2021' in the subject line:

  • Your name and full address
  • Distance you would like to swim (half, 1 or 2 miles)
  • T-shirt size
  • Date of birth (required for event registration)
  • Any other relevant or supporting information eg. your WDC supporter number


We will support you all the way

Team Orca swimmers will receive:

  • a free WDC T-shirt
  • a Team Orca Swim Serpentine Welcome Pack
  • help with fundraising ideas in the lead up to the event
  • support on the day, before and after your swim.

Any questions or need help?


Team Orca at Swim Serpentine 2019

Here is our lovely Team Orca at Swim Serpentine on a very sunny day. Everyone had a fantastic time and did incredibly well - both with their swims and their fundraising. Read Nina's inspirational story about her experience and get in touch if it tempts you to take the plunge next year!

If you'd like to swim closer to home and raise funds for WDC, scroll down for just a few of the iconic open water swims all over the country. Alternatively, contact and we'll help you find your perfect swim.

Nina's Story

Nina  (left) sums up a fabulous early morning dip at Swim Serpentine 2019.

Fancy joining us in 2020? See below for all the information you need.

Nina, Miha and Beth

"We gathered in the early morning, just as the sun came out and uncovered the sparkling Serpentine lake. The warmth on my face was a great comfort, knowing that soon I’d be in that chilly water swimming for WDC, Whale and Dolphin Conservation’s Team Orca.

Excitement kept a big smile on my face as I rushed into a tent to squeeze myself into a wetsuit and then joined the "half-mile" group with grey swim caps at the check-in. We were the first ‘wave’ to swim.

Dream weather with 25°C and full sun in Hyde Park could not make this a better day! Highly motivated and full of passion to contribute something to healthier oceans (and ourselves!) I jumped into17°c cold water with other swimmers and joined a chilly chorus of "Aah, ooh, huh, brr...". After a few seconds though the wetsuit did its job and kept me comfortable. The rest was just a "swim in the park"!

With hundreds of swimmers around me, I felt strongly that I was helping to change the world and was proud to take part and fundraise. That day I swam for whales and the oceans!

After my half-mile accomplishment, I finally met with Stine and Sharon from WDC, whom I knew so far only through emails and their website. I have been following WDC’s work for quite a while and reading about their progress frequently. To meet people who have worked towards great achievements for whales and the oceans was a real pleasure! We exchanged hopes and concerns about these beautiful animals and I left more inspired than ever and wanting to take part in other events in the future. Thank you WDC!"