Boundaries of the Republic of Ireland

Land Borders

• East and South: Northern Ireland (part of the United Kingdom)
• West: Atlantic Ocean
• North: Atlantic Ocean and Northern Ireland

Maritime Boundaries

• East: Irish Sea and North Channel
• South: Celtic Sea and Atlantic Ocean
• West: Atlantic Ocean
• North: Atlantic Ocean and North Channel

The Republic of Ireland's coastline stretches approximately 3,170 km (1,970 miles).