Two mile
Sat 16 Sep 2023 London, UK

Swim Serpentine Two Mile

Two laps of the Serpentine Lake at your chosen pace, as part of the one-day open water swimming festival in the beautiful Hyde Park. Charity places now available for 2024.

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  • Sat 16 Sep 2023
The Serpentine Lake, London

Two mile



Age 16 & over

  • 2 miles lake swimming


Savour the summer and swim happy with Swim Serpentine as you tackle an epic distance at the Olympic venue made famous by the double-medal winning Brownlee brothers.


  • Popular open water swimming event and festival

    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.

  • Swimming festival with distances for all abilities

    Sociable hub to hear inspiring speakers, buy kit and meet 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 required if too cold

  • Bag storage
  • Cafe
  • Toilets
  • Urban

Event HQ

The Serpentine Lake
Hyde Park
Greater London
W2 2UH

  • 2 laps
  • Distance markers
  • First aid
  • Wave start

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.

Wetsuit policy

Everyone who takes part must either wear a full-length wetsuit or use a tow-float for safety reasons. If the temperature of the water in the Serpentine is 15°C or above, wetsuits are optional. If you choose not to wear a wetsuit, you must use a tow-float. If the water temperature is under 15°C, wetsuits are compulsory.

Water safety

The course will be clearly marked by large buoys, and a water safety team is on hand to assist any swimmers on the day if needed. All swimmers should complete their chosen distance in full while training in a pool. Swimmers should also practise swimming in the open water before the event. 

  • Public transport links
  • Recycling
  • Sustainability policy

London Marathons Events inspires and delivers innovation in mass participation event sustainability.


  • Bottles and cups

    Recycle every plastic bottle.

  • Emissions

    Reduce power usage and use Hydrotreated Vegetable Oil (HVO) fuel over red diesel in generators.

  • Waste

    Separate waste to support recycling and reduce plastic with plastic-free goody bags made from sugarcane.

  • Medal

All finishers will receive a medal after their swim – no matter what their time and ability – as well as a souvenir swim hat to wear on the day.

Every year thousands of swimers take part in this event and fundraise for charity. While this is hugely beneficial to the charities it gives the participant advantages too, from supporting a cause that is close to your heart to securing a place in this highly sought-after event and much more.

Benefits of swimming for charity

Committing to raising money for charity gives you motivation to get training, plus all of these extras which will elevate your event experience:

  • Fundraising support

    Charities know that raising money is all part of the challenge, which is why they provide advice, branded materials and a personalised online fundraising page to help the donations roll in. Think videos for social media, branded imagery and testimonials from previous participants.

  • Training support

    Whether this is your first swim or your fifth, you'll need to train for it! You'll receive an in-depth training plan with guidance, plus many charities have access to expert coaches and elites too, who can provide exclusive tips for your race preparation. Experts include Runningwithus, Full Potential and Olympic champs.

  • Branded swimming kit

    When you show up on the day, people need to be able to see clearly that you're supporting a charity. Most charities will give you a branded and personalised t-shirt or vest to wear on the big day, and often a charity swim hat for training.

  • Support on the day

    When you're partway through your swim and your energy is flagging, what you need is a boost from cheering spectators to keep you moving. Many charities set up a cheer station along the route, keeping an eye out for you to send up a huge cheer as you glide past!

  • Post-race recovery

    Refreshments and an indulgent post-race sports massage are often provided by charities for their participants. This is the perfect way to recover alongside other people who are supporting that cause.

  • Exclusive social groups

    You won't be the only person swimming for that charity, so it's well worth meeting others through the charity's invite-only social media pages! You can organise training sessions, chat with the charity's expert coaches and share tips and stories with each other to keep the motivation levels running high.

What are charity places?

Charities buy places in this event, then give them to swimmers who agree to raise money for the charity – these are called charity places. Charity places are a great way to support a good cause and get a place in the event, especially if general entries are closed.

Swimming challenges and charity fundraising go hand-in-hand - which charity will you swim for?

Charity places

These charities have places in the event. To secure your place, select a charity, complete the form and follow the instructions.

Free sign up Cancer

Macmillan Cancer Support

No one should have to face cancer alone.

  • Fundraising support
  • Fundraising materials
  • Online training zone
  • Memento

Sign up


  • Age 16 & over
  • Entries closed
  • Charity entries open
  • Charity places
  • Enter online