It is very close, only about 4 kilometres or 2.5 miles.
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 Dublin city centre to Celbridge is about 13 miles or 21 kilometres.
From Dublin city centre it is about 71 kilometres or 44 miles to Arklow.
The Jackson Court Hotel is in Dublin city centre, being on Harcourt Street. It is within walking distance of all the key places in the city centre, being especially close to St. Stephen's Green and Grafton Street. See the hotel's website below.
About 17 kilometres or 10.6 miles. It is not far and there are tours from the city that go there, as well as regular public transport that goes to Malahide.
The area known as the North Strand, which is not far from the centre of the city and on the north side of the river Liffey.
Yes, Dublin is by far the largest city in Ireland
You can look at that in several ways. Dublin and Wicklow are neighbouring counties, so they share a border. So they are 0 miles from each other. From the city centre of Dublin to the Wicklow border is about 17 miles. From the city centre of Dublin to Wicklow town is about 30 miles.
From Dublin city to Longford town is about 73 miles or 118 kilometres.
Glasgow has 635,000 in the city and 1.7 million metro Dublin has 554,000 in city and 1.4 million metro
From the city of Dublin to Knock in county Mayo is about 211 kilometres of 131 miles.
It's 418 miles from city centre to city centre.