3653 miles.
From Belfast in Northern Ireland to N'djamena, the capital of Chad is about 3144 miles.
Distance in miles from Sligo Eire to Belfast nr. Ireland
Belfast, Ireland, and Rome, Italy, are approximately 1,214 miles apart.
208 miles
Belfast and Downpatrick are located in Northern Ireland in the United Kingdom. There is a distance of 21 miles between these two locations.
It is about 100 miles or 160 kilometres.
The air distance from Belfast, Northern Ireland, to Inverness, Florida, is 4,097 miles. That equals 6,592 kilometers or 3,560 nautical miles. I suspect that this questioner is asking about Inverness, Scotland. It isn't possible to drive directly because Belfast is in Ireland and entails a ferry trip to Stranraer. The mileage from Stranraer to Inverness is about 260 miles.
Air distance between Belfast, Northern Ireland, United Kingdom and Jeddah, Saudi Arabia is 3,263 miles. That is 5,252 kilometers. It is 2,836 nautical miles.
Belfast is a city in Ireland. It does not have any significant lakes in it. The nearest big lake is Lough Neagh, which is about 17 miles from Belfast. It is the largest lake in Ireland.
5,069 miles
3892 miles using this website http://www.geobytes.com/CityDistanceTool.htm
Belfast is in Ireland, so you should say which other part of Ireland you want to know the distance from. You could say it is zero miles from Ireland, being inIReland. If you are talking about the Republic of Ireland, then it is about 69 kilometres or 43 miles to the nearest crossing point, just north of the town of Dundalk.