RNLI Castle to Castle Swim 2025

Event is now SOLD OUT - to sign on to the waitlist click on "Reserve a Spot" button and then select "Join Waitlist" option and click "Check Out" button

Places are still available for the RNLI Around the Mount Swim (12th July) and the RNLI Buoy to Beacon (13th Sept)

For more info contact castle2castle@rnli.org.uk

The Castle 2 Castle Swim is an iconic one mile open water sea swim across the Carrick Roads. It starts at Pendennis Castle in Falmouth and finishes at St Mawes Castle on the Roseland Peninsula.

This popular event is strictly limited to 600 swimmers and is open to anyone over the age of 14.

Please note, participants should be intermediate or experienced open water swimmers.

Registration for the swim is £30 and we ask everyone to pledge to raise at least £100 through sponsorship, as every pound raised will support our volunteers in saving lives around our coast.

The swim is an absolutely fantastic event largely run by volunteers, without whom it wouldn’t be possible. It promises to be great fun with a fantastic atmosphere, so do come along and get involved.

If swimming isn't your thing but you would still like to be involved, please get in touch as there are many volunteering opportunities available on the day.

Please read our Terms and Conditions, as well as the event specific terms and conditions below. You will need to agree to these as part of the sign up process:

• You must be at least 14 years of age on the day of the event to enter.
• You will provide and wear your own wetsuit at the event.

No swimmer will be allowed in the water without a wetsuit on. We recommend wearing a swim-specific wetsuit, which will provide extra buoyancy and warmth

• You must be able to swim at least one mile in open water conditions.
• You must attend the safety briefing before the start of the swim.

Cold Water Shock

Open water swimming safety

Top tip for cold water dips

Alternate Date

If the swim cannot proceed due to unforeseen circumstances we have an alternate date of Sunday 14 September 2025 which all participants would be transferred to automatically.

Keep in touch

Your support saves lives, and we look forward to keeping in touch with you by post and phone, sharing our news, activities and appeals.

When using Eventbrite we will collect your personal details in order to register and communicate with you about this event only.

If you would you like to receive more information from the RNLI you can register RNLI.org/preferences.

Even if you have received our communications in the past, we’ll make sure we honour the preferences you express here.

If you would rather not hear from us, or would like to change how we contact you, please get in touch. Just visit RNLI.org/preferences or call 0300 300 9990.

Privacy Notice:

We will always store your personal details securely, and they will only be used by the RNLI, RNLI Shop and RNLI College. Your data may also be used for analysis purposes, to help us provide the best service possible. We will only allow your information to be used by suppliers working on our behalf and we’ll only share it if required to do so by law.

For full details see our Privacy Policy at RNLI.org/PrivacyPolicy or contact our Supporter Experience Team on 0300 300 9990 (from the UK), 01 511 9836 (from Ireland) or +44 1202 663234 (from any other country).