Check out the Ordanance Survey of Ireland (OSI) website for facts and figures on Ireland's tallest mountains, longest rivers, largest lakes and physical dimensions:
- Kerry has 4 of Ireland's 8 highest mountains, ranging from the 951m Mount Brandon to 1038m Carrauntoolhil. At ninth position is Donegal's Errigal at 749m.
- Ireland's longest river is the Shannon (360km) followed by the Barrow (193km), the Suir (184km) and the Blackwater (168km).
- Northern Ireland claims Ireland's largest lake, namely Lough Neagh at 381 sq km. County Galway's Lough Corrib is second at176 sq km and Lough Derg (which straddles Counties Tipperary, Galway and Clare) third with 118 sq km. County Fermanagh's Lough Erne covers 112 sq km and Roscommon, Longford and Westmeath share Lough Ree at 105 sq km.
- Depending where you measure to and from, Ireland is 486km from top to tail and 275km wide.