Carolyn
Driving
Dublin (Ireland) Waterford (Ireland)
Dublin to Waterford is 170 km. Depends where about's from Dublin and where to Waterford. But it's white long journey will take you around 2 hours or more. You can take a train though
Mentioned in this answer:
It takes about two and a half hours in normal traffic from Dublin city centre.
It's 164 km if you drive non-stop. See this page on Trippy for the distance from Dublin to Waterford.