Giants Causeway is very close to the ocean. It's basically about 2270 meters from the ocean depending on where you measure to the exact coastline.
If you're driving to a town near the beach or coastline, you could try Portballintrae.
How far is Salem from the ocean
How far is Philadelphia from the ocean
How far is Portsmouth, NH from the ocean
How far is Coos Bay from the ocean
How far is Redding from the ocean
How far is Tahoe City from the ocean
How far is Kalamazoo from the ocean
How far is Key Largo from the ocean
How far is Pacifica from the ocean
How far is Siena from the ocean