Swimathon, the world’s biggest fundraising swim, has been encouraging swimmers the length and breadth of the UK to swim a distance challenge since the very first event 31 years ago. Since then, Swimathon's mission of uniting swimmers around challenges and fundraising has prompted more than half a million swimmers to take part at their local pool and raised more than £48 million for charitable causes.

A challenge for everyone. A swim for all – Swimathon 2018 aims to raise as much money as possible for two causes close to the nation's hearts, Cancer Research UK and Marie Curie. Swimathon 2018 will take place from Friday, April 27 – Sunday, April 29. This is your swim – from 400m to 5k, there is a Swimathon challenge for you!

Individual Challenges

400mIntroducing a new Swimathon challenge in 2018 – if you haven't swum for a while, our 400m challenge is perfect for you. Shorter distance, same challenge – the 400m Swimathon challenge will remind you why you love swimming so much, 16 laps of a 25m pool and you will have smashed your Swimathon 2018 challenge

1.5kA great challenge for novice swimmers or those who prefer to push their speed on shorter distances. If you fancy working your way up to 60 lengths of a 25m pool, whilst raising some serious fundraising cash, then this is for you

2.5kIf you’re looking to go to great lengths to get sponsored, then 100 lengths of a 25m pool is for you. So jump in and make some proper fundraising waves

5kThis is the ultimate Swimathon challenge. It takes dedication, commitment and a good training programme to complete 5k. And, because 200 lengths of a 25m pool will leave everyone, including you, breathless, your efforts will be rewarded with lots of sponsorship

Team Challenges

Teams can be made up 2-5 people. The team manager must create the team by completing the registration. Once the team is registered and paid for by the manager, they can then invite team members through their participant dashboard.


Take on 60 lengths of a 25m pool in a relay with your friends or family. Tell everyone you know and then watch your sponsorship total come along swimmingly


Round up your water-loving friends and take on 200 lengths of a 25m pool together. Then lap up the sponsorship money and the glory