Scilly Swim Challenge 2027

One of the UK's most iconic open water swimming adventures, the sell-out Scilly Swim Challenge happens in September every year. It is a breathtaking 15km island-hopping journey across the sparkling waters of the Isles of Scilly, completed over one or two unforgettable days.

Combining exhilarating sea swims with short walks between islands, this is an unforgettable shared adventure through some of Britain’s most breathtaking coastal scenery.

With white-sand beaches, turquoise seas, expert safety support and an unrivalled community atmosphere, the Scilly Swim Challenge offers the perfect blend of challenge, exploration and pure swimming joy. It’s the kind of event that stays with you long after you’ve left the islands. Many return year after year.