The Swim Thru Rottnest is summer swimming at its most relaxed and rewarding. Held in the calm, crystal-clear waters of Thomson Bay, this iconic island swim has been a favourite on the WA ocean swimming calendar since 1977, and it’s easy to see why.

This is the perfect chance to experience Rottnest Island from the water, gliding over white sand, spotting fish below, and soaking up that unmistakable Rotto atmosphere. The protected bay means friendly conditions, plenty of smiles, and a real sense of community both in and out of the water.

With two achievable distances on offer, it suits everyone from first-time ocean swimmers to seasoned regulars using it as a confidence boost ahead of longer summer swims. You’ll hear cheers from the jetty, feel the buzz on the beach, and finish with that salty grin that only a great ocean swim delivers.

More than just a swim, it’s a full island experience. Swim, wander, refuel, and enjoy a day where the pace slows down and the ocean does the talking.