The Swim Thru Rottnest is a dreamy prelude to the big Rotto Channel later in the season. Held in the protected, postcard-perfect waters of Thomson Bay, this island swim blends natural beauty, calm conditions, and that cruisy, sun-drenched summer atmosphere Rottnest is famous for.

Choose from a 1.6km or 3.2km course, both taking you through crystal-clear shallows with views back to the white-sand shoreline. It’s the kind of swim where you can spot fish beneath you, hear cheers from the jetty, and maybe even pass a few curious quokkas on your way to the start line.

Whether you’re sharpening your skills for the longer crossing or just floating your way to the finish, it’s an unforgettable way to experience Rotto. The course is well-marked and swimmer-friendly, with water safety on point and plenty of support from spectators and fellow swimmers.

Stick around after the swim to explore the island, grab a coffee or fresh seafood lunch at Thomsons or The Lane Café, hire a bike for a spin around the coastline, or simply stretch out on the sand and soak it all in.

Salty, scenic, and full of summer spirit, this is Rottnest at its swim-lovers’ best.