It is at least 222 kilometres or 138 miles. Donegal is a large county, so where precisely you are starting from will make a difference. Depending on traffic, the route you take, and where precisely...
Approximately 275 kilometres or 171 miles. But the distance from The Ards Peninsula to Dunquin of the Dingle Peninsula is 217 miles. The furthest two points of Ireland from East to West are not...