Waterford Greenway

The Waterford Greenway follows the trackbed of the former Waterford to Dungarvan railway, closed in 1967, for 46 km along the south coast of County Waterford. It is the longest fully traffic-free cycling and walking trail in Ireland. The route passes over three railway viaducts and through a 400-metre tunnel (requiring lights), with coastal sections above Dungarvan Bay and inland stretches through the Comeragh foothills.

The most dramatic section is the Kilmacthomas Viaduct — an eight-arch stone railway bridge high above the Mahon River valley, with views of the Comeragh mountains on one side and the valley below on the other. The 400-metre Ballyvoyle tunnel, toward the Dungarvan end, requires lights (rentable with bikes). At the Dungarvan end, the trail follows the estuary shoreline with views across the bay to the Drum Hills.

Bike hire is available in Waterford city, Kilmacthomas and Dungarvan. Multiple operators offer shuttle services to allow one-way cycling. The full 46 km one-way is a solid day's cycling (3–5 hours at a comfortable pace); most people do a section from either end. Dungarvan is the better lunch destination — a lively market town with good restaurants on the quay.