Eton Dorney Swim Long

Swim for Rainbow Trust at the Eton Dorney Swim Long 2026

Take on an unforgettable open water challenge at the iconic Olympic venue, Eton Dorney, while raising vital funds for families caring for a seriously ill child.

Whether you choose the 2.5km, 3.8km, 5km or 10km distance, every stroke will help Rainbow Trust Children's Charity continue providing practical and emotional support to families when they need it most.

Register Your Interest for a Charity Place

Complete the form below and a member of our events team will be in touch with more information about securing a Rainbow Trust charity place.

Event Details

The Eton Dorney Swim Long takes place at the world-class Dorney Lake near Windsor. The event offers swimmers the chance to race in a stunning Olympic-standard venue with professionally managed open water courses. Distances available include 2.5km, 3.8km, 5km and 10km.

Who Can Take Part?

Whether you’re an experienced open water swimmer or taking on your first endurance swim, the Eton Dorney Swim Long is suitable for a range of abilities. The professionally managed course includes safety teams, feed stations and chip timing to support swimmers throughout the day.

Why Take Part?

• Swim at a London 2012 Olympic venue
• Choose a distance to suit your experience level
• Enjoy a fully supported open water event
• Receive fundraising support from Rainbow Trust
• Make a difference for families facing serious childhood illness

Why Fundraise for Rainbow Trust?

When you join our team, you’re not just signing up for a race - you’re helping to change lives.

• Make a real difference – Your fundraising will go directly towards providing vital care and support for seriously ill children and their families.
• Be part of our community – Join fellow Rainbow Trust runners, wear your vest with pride, and feel the motivation of running for something bigger.
• Support from start to finish – From the moment you sign up, our events team will be there with training advice, fundraising tips, and encouragement every step of the way.

What You’ll Receive as a Rainbow Trust Runner

• A free Rainbow Trust running vest to wear on race day
• A dedicated fundraising pack full of ideas and resources
• Regular emails to keep you on track with your training and fundraising
• The knowledge that your miles are making a genuine impact

For more information please contact the Events Team [email protected] or 01372 220039

Please read our Rainbow Trust Sports Challenge Terms & Conditions before signing up.