Marathon Swims


Marathon Swims is the ultimate swimming challenge. Swimming now has its own marathon.

Marathon Swims - Saturday 12 November 2022:

Marathon Swims returns to the London Aquatics Centre, on Queen Elizabeth Olympic Park on Saturday 12 Nov!

The public ballot for the Marathon 10k and Half Marathon 5k has been completed and all successful applicants have been notified.


Charity places in the Marathon 10k and Half Marathon 5k are available now along with places in the Team 10k and 1k Challenge.

ENTER today.

Marathon Swims Virtual Challenge 1-30 November 2022:

Marathon Swims Virtual Challenge is also back for a third year. Take on a Marathon 10k, Ultra Marathon 25k or Ultra Marathon 50k over the month of November. FREE entry. ENTER Today

Marathon Swims format:

We've innovated in swimming to give you instant, reliable results using RFID chip technology to deliver an engaging, exciting challenge event (for spectators as well as participants). No need for lap counting or endless laps of the same lane.


Watch our 30 second Marathon Swims format explainer video:

Checkout out our previous

Marathon Swims events at the London Aquatics Centre:

Find out more about the Marathon Swims event format

For further information - please see our FAQ's

Who will be the next to make it on to the Marathon Swims Hall of Fame?

A big thank you to our Marathon Swims Partners


The Ultimate Swimming Challenge

Marathon Swims 2022

Saturday 12 November 2022

London Aquatics Centre

London's marathon of swimming returns to the London Aquatics Centre on Sat 12 Nov 2022. Take on the Marathon 10k, Half Marathon 5k or the 1k Challenge. Or team up with a friend to take on the Team 10k.

More information click here.

Register your interest in Marathon Swims 2023 here.

Marathon Swims Virtual Challenge

1-30 November 2022

Any swimming venue

Marathon Swims Virtual Challenge is back! Take on the Marathon 10k, Ultra Marathon 25k or the Ultra Marathon 50k over the course of November 2022.

FREE to enter with medals and merchandise available for purchase.

ENTER today



Press and media (including latest press releases)

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Created and operated by Participation Sport Ltd.

Owned by The Swimathon Foundation

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