The Outdoor Swimming Society is a worldwide collective of swimmers, that has led the wild swimming movement in the UK. The OSS has over 70,000 followers across a range of channels (instagram, facebook, e-news) and runs three of the most iconic swims in the country, with it's flagship event, the Dart10k, the London Marathon of swimming. 

The OSS events programme leads the field of open water in route, experience and community warmth - our events are a journey, not a race, and end with a festival feel. We are now set to expand.