Plan Your Next Marathon Swim
Australia is home to some of the world’s most iconic and challenging marathon swims — from ocean channel crossings to river endurance races. The Australian Marathon Swimming Calendar brings these events together in one place, helping swimmers plan their next challenge and celebrate the diversity of open water swimming across the country.
This calendar highlights key events recognised by Marathon Swimming Australia, including established classics such as the Derwent River Big Swim, Port to Pub, Palm to Shelly, and the Rottnest Channel Swim, alongside emerging local and regional races.
If you are an event organiser and would like your swim listed here and your results formally recognised in the Australian Long Swims Database, we’d love to hear from you.
Please reach out via our Contact Us page to discuss event inclusion and ratification requirements.
Derwent River Series – Tasmanian Marathon Swimming Challenges
The Derwent River Series showcases a collection of marathon and ultra-distance swims set on the iconic Derwent River in Tasmania, Australia, one of the nation’s most historic and challenging open-water routes. Anchored by the renowned Derwent River Big Swim, this series offers swimmers a suite of endurance events ranging from classic long-course river crossings to unique freshwater and estuarine challenges against stunning natural backdrops.
The Derwent River Series celebrates endurance, resilience and the spirit of marathon swimming. All swims take place in Tasmania’s diverse waterways, from cool freshwater rivers and lakes to tidal estuarine sections offering a mix of technical challenges, scenic beauty, and personal achievement opportunities.