The Ultimate Swimming Challenge

Swimming now has its own marathon


Marathon Swims


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

Marathon Swims 2021:

The Marathon Swims 2020 event at the London Aquatics Centre on Queen Elizabeth Olympic Park could not take place as planned in 2020.  We'll be back next year for Marathon Swims 2021.


This decision about this year's event was made after very careful consideration of the options available to us and our ability to stage Marathon Swims 2020 as we would like, in as safe and secure an environment as possible, and we sadly reached the conclusion that it was not possible this year. 


Register your interest in Marathon Swims 2021 today.

Marathon Swims 2020 - Your questions answered

Marathon Swims Virtual Challenge 2020:

Marathon Swims Virtual Challenge was your chance to take on an iconic marathon swimming distance in your own time. And it was FREE!

Participants took on the Marathon 10k and the Ultra Marathon 25k. Swim as often as you'd like at a venue/pool of your choice to achieve your distance challenge. Complete your challenge over a maximum of 30 days before 31 December 2020 (Tier 4 areas will have a new timeframe for completion set when restrictions are over).


Send us your results to earn your exclusive Marathon Swims Virtual Challenge medal.

Registration is now closed. The Marathon Swims Virtual Challenge will be back next year. Register your interest 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 Virtual Challenge

1 Nov - 31 Dec 2020

Choose from the Marathon 10k or the Ultra Marathon 25k. Swim as often as you'd like in a pool/venue of your choice to achieve your distance challenge over 30 consecutive days before midnight 31 Dec 2020.


Send us your results to earn your exclusive Marathon Swims VIRTUAL medal. Registration is now closed.

Marathon Swims:
New venues


We're keen to take Marathon Swims to new locations. If you'd like to see a Marathon Swims event in a pool near you - register your interest here



Press and media (including latest press releases)



Created and operated by Participation Sport Ltd.

Owned by The Swimathon Foundation

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© 2020 Marathon Swims

Operated by Participation Sport Ltd.