It's one of the oldest sea races in the world
The 98th Dublin City Liffey Swim takes place this afternoon.
Over 500 swimmers will cover a distance of 2.2 kilometres from Watling Street Bridge beside the Guinness Brewery, past the Four Courts, the Civic Offices and Liberty Hall, under O' Connell Bridge, to finish up at the Custom House.
It's one of the oldest river races in the world and considered as the All Ireland Final for open-sea swimmers.
Organisers say there are a number of really good spots for people to watch the race and cheer on the swimmers, including Capel St Bridge, the Ha'penny Bridge, O'Connell Bridge and the Rosie Hackett Bridge.
The men's race starts at 1pm and the women's at 2.
Eoin Gaffney from Leinster Open Sea says it's a family affair - which this year spans three generations: