Blarney is in Cork, so to drive there from Dublin airport would take at least 3 hours on the motorway and could be more in heavy traffic.
105 miles
It's about 3 hours by train from Dublin to Cork - I just did it in September. Blarney is about 10 - 15 miles NW of Cork. If you go to Blarney, and want lunck, try Muskerry Arms restaurant (big yellow building) for some Irsish Stew and A Guiness - very good! We ate there.
About 6 miles.
About 8 miles or 12 kilometres.
Stena Line goes from two places in Dublin. Dún Laoghaire, which is a port on south of the city is about 14 miles or 23 kilometres from Dublin Airport. There is also Dublin Port in the city, which is about 8 miles or 13 kilometres from Dublin Airport.
It is about 147 miles or 225 kilometres.
About 160 miles or 250 kilometres.
There is no actual place called the Dublin Exhibition Centre. There are a number of places in Dublin that have exhibitions, most notably the RDS (Royal Dublin Society). Dublin Airport is about 6 miles from the city centre. The RDS is about 2 miles from the city centre, on the opposite side than Dublin Airport. Most of the other places where they have exhibitions are close to the city too. So wherever the place you are referring to is, it is not far from Dublin Airport, within about 12 miles.
From Roscommon town to Dublin Airport is about 100 miles or 162 kilometres. Depending on where specifically in the county of Roscommon you are going to, the distance would differ, but not by a large amount.
Five miles north west of the small city of Cork is the village of Blarney - its name being derived from the Irish An blarna meaning 'the plain'. Near the village, standing almost 90 feet in height, is the solidly built castle of Blarney. Cormac MacCarthy erected the present castle, the third constructed at the site, in 1446. Built on a rock, above several caves, the tower originally had three storeys. On the top storey, just below the battlements on the parapet, is the world famous Blarney Stone, said to give the gift of eloquence to all who kiss it. Kissing the stone is for some people a difficult physical feat. In past times, to kiss the Stone people were hung by their heels over the edge of the parapet. One day a pilgrim broke from the grasp of his friends and went hurtling downward to certain death. Since that time the stone has been kissed by another method. First, you sit with your back towards the stone and then someone sits upon your legs or firmly holds your feet. Next, leaning far back and downward into the abyss while grasping the iron rails, you lower yourself until your head is even with the stone to be kissed.
The legend of the Blarney Stone is that in Castle Blarney, Blarney, in County Cork is that shoudl an individual kiss the stone they will be endowed with the gift of gab (great eloquence of skill at flattery). As far as the origin of the legend, one of the earliest stories involves the Castle's Builder Cormac MacCarthy in a lawsuit. The legend goes that he was worried about the result so he prayed to Clíodhna (Queen of the Banshees) for assistance. She told him to kiss the first stone he saw on the way to court in the morning. He did so and was able to plead his case with great eloquence. The legend goes on to say that he then incorporated that stone into his Castle.
Dublin would be better. Shannon is just a town near Shannon Airport. Dublin is a city with many attractions, so there is far more to see and do.