Open Water Swimathon is back for 2021, taking place in stunning venues all across the UK! A range of distances are available – from 500m up to Triple 5k – with individual and team challenges, so whether you’re dipping your toe into the open water for the first time or a seasoned outdoor swimmer, there’s something for you. You can take part in an organised session or at a time or place that suits you with MySwimathon, which includes a free entry option – it’s your swim, your way!