Cashel to Giant's Causeway

ViaMichelin shows it at about 2.5 hours, but I would allow more like 3.5. EDIT: Whoops! Tom, below, is correct. When I ran it, it defaulted to a town called Causeway. My bad.

If you mean the Rock of Cashel, viamichelin puts it at 4 1/2 hours. Having done that drive, I'd say it'll take at least that long - more likely 5 1/2 - 6 hours, allowing for stops along the way. The distance is about 430 Km.