e Car Rental Dublin - The River Liffey

The River Liffey originates in the Wicklow Mountains, about 32 k South of Dublin City, and flows through three Counties, Wicklow, Kildare and Dublin before reaching the sea in Dublin Bay.

The total course of the river is 80 km following a course through the Wicklow Mountains, including the Lackan Reservoir, through Celbridge where it passes through a dam, followed by Leixlip and Lucan.
There is annual canoe races from Wicklow to O'Connell bridge held every year for some of Ireland's best canoeists. While it would be generally considered unwise to swim in the Liffey, there is a swim race held annually starting at O'Connell Bridge.

The Liffey has a number of tributaries before entering the sea in Dublin Bay. Included in these are the Grand and Royal Canals which make their way from the River Shannon. There are several (7) other rivers which join the Liffey before it reaches the sea, but none follow natural courses and most flow underground through Dublin. The most famous of these under ground river is the Dodder which actually flows under Trinity College Dublin, and is used by the college to generate power. It is possible to see these rivers about ground if you move out to the outskirts of the City.