Open Water Swimathon is returning for the fifth year running on Saturday 11 - Sunday 12 September 2021 at venues across the UK. This is your chance to fundraise for two incredible causes, Cancer Research UK and Marie Curie.

Cancer Research UK, the worlds leading cancer charity is dedicated to saving lives through research. They don't receive any government funding for their work, so their progress is all thanks to the support of people like you.

Marie Curie provides expert care, guidance and support for people living with any terminal illness, and their families. Around 2,100 Marie Curie Nurses work day and night, in peoples homes all over the UK, providing hands-on care to people when they need it most.

Together we can really make a difference.