About
Marathon Swims
Marathon Swims is London's marathon of swimming. The annual event at the London Aquatics Centre, on Queen Elizabeth Olympic Park is in its 8th year. Swimming now has its own marathon.
Entries to Marathon Swims 2026 are now closed. Register your interest in Marathon Swims to be first to hear when we launch Marathon Swims 2027.
Marathon Swims 2026:
Marathon Swims 2026 will be hosted at the LAC on Sunday 1 November 2026.
CHARITY PLACES:
Big thanks to our amazing charity partners: Alzheimer's Society and Level Water
BALLOTS:
A ballot operates for the Half Marathon 5k and the Marathon 10k. The ballot ran until Thursday 30 April 2026. All successful entries (and unsuccessful entries) have been notified of the result.
GENERAL ENTRY:
General entry tickets for the 1k Challenge and the Team 10k are now SOLD OUT.
Marathon Swims Virtual Challenge:
The Marathon Swims Virtual Challenge runs between 1-30 November 2026. FREE entry to swim a Marathon 10k, Ultramarathon 25k or Ultramarathon 50k over 30 days. Registration - now OPEN
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
Enter
The Ultimate Swimming Challenge
Marathon Swims 2026
Date: Sunday 1 November 2026
London Aquatics Centre
London's marathon of swimming returns to the London Aquatics Centre in 2026. Take on the Marathon 10k, Half Marathon 5k or the 1k Challenge. Or team up with a friend to take on the Team 10k.
Entry for Marathon Swims 2026 now CLOSED. Register your interest to be first to hear when we launch Marathon Swims 2027.
Marathon Swims Virtual Challenge 2026
1-30 November 2026
Any swimming venue
Marathon Swims Virtual Challenge has returned! The challenge of the Marathon 10k, Ultramarathon 25k or the Ultramarathon 50k over the month of November awaits.
FREE to enter with medals and merchandise available for purchase. ENTER Today
Contact
