About
Marathon Swims
London's marathon of swimming hosted at London Aquatics Centre, on Queen Elizabeth Olympic Park. Swimming now has its own marathon.
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Marathon Swims 2025: date to be announced
Enter the ultimate swimming challenge. Challenges include the Marathon 10k, Half Marathon 5k, 1k Challenge or the Team 10k. Marathon Swims sells out every year, register your interest to be sure you hear first when we open Marathon Swims 2025.​
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Marathon Swims Virtual Challenge:
The Marathon Swims Virtual Challenge runs between 1-30 November. FREE entry - swim a Marathon 10k, Ultramarathon 25k or Ultramarathon 50k over 30 days. ENTER HERE.
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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
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For further information - please see our FAQ's
Who will be the next to make it on to the Marathon Swims Hall of Fame?
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A big thank you to our Marathon Swims Partners
Enter
The Ultimate Swimming Challenge
Marathon Swims 2025
Date: to be announced
London Aquatics Centre
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London's marathon of swimming returns to the London Aquatics Centre in 2025. Take on the Marathon 10k, Half Marathon 5k or the 1k Challenge. Or team up with a friend to take on the Team 10k.
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Marathon Swims Virtual Challenge 2024
1-30 November 2024
Any swimming venue
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Marathon Swims Virtual Challenge is back! Take on the Marathon 10k, Ultra Marathon 25k or the Ultra Marathon 50k over the course of November 2024.Now open.
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FREE to enter with medals and merchandise available for purchase.
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Contact
Press and media (including latest press releases)
Email:
@MarathonSwims
Created and operated by Participation Sport Ltd.
Owned by The Swimathon Foundation