Miu Tanaka’s Great Lake Swim Ratified by Marathon Swimming Australia

Miu Tanaka has completed a remarkable solo swim of Tasmania’s Great Lake, covering approximately 25km in 9 hours, 13 minutes and 44 seconds, in one of the more challenging cold-water environments in Australia.

Marathon Swimming Australia (MSA) has formally ratified the swim, recognising it as a significant achievement conducted under standard MSA rules.

Completed in water temperatures holding at 13°C, and with air temperatures as low as 3°C, the swim demanded exceptional resilience and composure. Despite the conditions, Miu described the experience as “peaceful” following the swim .

This performance holds an important place in Australian marathon swimming history, with Miu becoming the first woman and only the second person to successfully complete the length of Great Lake, a remote and testing freshwater course in Tasmania’s Central Highlands .

This achievement builds on an exceptional period for Miu, following her recent 58km New Norfolk to Bruny Island swim, further establishing her as one of Australia’s emerging marathon swimming talents .

The swim is now recorded in the Australian Long Swims Database, contributing to the preservation and recognition of Australia’s marathon swimming history.

MSA congratulates Miu on this outstanding achievement , a swim that reflects endurance, adaptability and the spirit of exploration that defines marathon swimming.