A family event
On Saturday, organisers held briefings for the athletes before around 100 people donned trunks – and some in tutus – to take part in the Budgie Run.
The run began in 2017 when some Lakesman competitors ran down Lakes Road to the shore of Derwentwater in small swimming trunks, in honour of Lakesman organiser Phil Whitehead, who was competing in a triathlon in Hawaii later that year.
Last year's event pumped almost £1.5 million into the local economy, with participants descending on the area for the event and, in the build-up, for training.
A council spokesman said: "The event is a showcase for all the great attractions in our area – taking in Derwentwater, the Solway Coast and the area round Keswick.
"The competitors often stay for several days and bring their families with many also raising money for charity."
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