The Trans Derwent Swim is a staple of the Royal Hobart Regatta; and in 2023, as the Regatta celebrates 185 years, the swim will return on Sunday 12 February.

The traditional swim comprises a 1.5km route across the Derwent River, commencing in Montagu Bay and finishing at the Regatta Grounds within the allocated 45 minutes.
Since its inception, the Trans Derwent Swim has become a must-do for locals, as well as interstate and international visitors. The swim caters for 100+ swimmers, who must brave the dark waters of the Derwent River in this challenging feat.

In 2023 the Double Derwent Swim, from the Regatta Grounds to the Tasman Bridge and back, will be held following the traditional Trans Derwent Swim, with an allocated 1 hour and 15 minutes.