A male swimmer wearing a black swim cap finishes putting on his swimming goggles.

Henley Swim Thames Marathon

Long-distance swimming marathon from Henley-on-Thames to Marlow.
11 August 2024 07:00
It’s free to sign up with a fundraising pledge of £250-£400 depending on distance
5.5km or 13km distance

About the event

'An unforgettable event. The support from the Macmillan volunteers on hand was incredible!'              

Why should I join Team Macmillan?

Event accessibility

Ready to join?

See other events

Three people photographed from behind with their arms around each other wearing green Macmillan running tops

Are you looking for a different event?

If this event doesn't quite fit the bill, there are loads more to chose from. Go back to the events listing to find the perfect event for you.

View all events