The River Barrow is considered one of Ireland's most scenic and picturesque inland waterways. At 192 kilometres, it is the second longest river in Ireland, behind the River Shannon. Along with the River Nore and River Suir, the Barrow is one of The Three Sisters.

The River Barrow is Ireland's second longest river. From its source in the Sliabh Bloom Mountains to where it enters the sea at Waterford Harbour, the river extends to 192 km.

Cruising the River Barrow is a unique experience due to its unspoilt and uncrowded waters. The Barrow is navigable for 65 kilometres from Athy, Co. Kildare to St. Mullins, Co. Carlow. South of St. Mullins, before the river enters the sea, it is tidal and dangerous for navigation.

The 'Barrow Way' is a long-distance walking trail which follows the original towpath beside the river. The track along the Barrow starts at Lowtown, Co. Kildare and ends at St. Mullins, Co. Carlow covering a distance of 114 kilometres.

The Barrow was a significant commercial canalised waterway right up to the 1950's with important river ports at Athy, Carlow, Graignamanagh and New Ross. Barges transported malting barley to Dublin as raw material for the famous Guinness stout.

The River Barrow is a major element of Ireland’s inland waterway network. It links between the port of Waterford and the Grand Canal, which itself reaches west to the Shannon and east to Dublin. There are three sections to the navigation: - The tidal River Barrow from Waterford Harbour to St. Mullins, Co. Carlow.

The River Barrow has so much to offer tourists looking for a green tourism destination in Ireland. The Barrow Valley is truly a beautiful area - the lush green forests, gentle slopes, flat plains and of course the river offer spectacular scenery.

The tranquil waters of the River Barrow are perfectly suited to a variety of different water sports. Popular activities include swimming, sailing, waterskiing, rowing, canoeing and kayaking.

St Mullin's (Irish: Tigh Moling) is a village situated in the south of County Carlow on the eastern bank of the River Barrow in Ireland. The place is named after Saint Moling, who founded a monastery there in the early 7th century.

The Barrow supports a vibrant mixed fishery; it is renowned for salmon, brown trout, roach, rudd, pike, perch and tench with access to all parts of the river from the Barrow way. Permits required to fish for salmon and trout on the river are available from local angling clubs or tackle shops.