There are two ferries serving Rathlin Island which leave from Ballycastle. The dedicated foot passenger ferry takes 25 minutes to make the crossing whereas the combined car and foot passenger ferry takes 45 minutes. Both ferries operate throughout the year with up to 10 crossings a day in the Summer and half this amount during the Winter season.
The nearest major port to the start of the Causeway Coast Way is in Larne, which is around 65km south of Ballycastle. There are frequent passenger sailings with P&O Ferries to Cairnryan and Troon in Scotland.
The Ulsterbus route 252 ('Antrim Coaster') links Larne to all of the towns along the Causeway Coast Way.
Belfast is just over 85km south of Ballycastle. From here, Stena Line operates a daily service to Stranraer in Scotland with typically around 5 crossings each day. Norkfolk Line also operate a route from here to Birkenhead (Liverpool) in England. They usually have 2 crossings a day.
The Ulsterbus route 252 ('Antrim Coaster') can be taken from the Europa Bus Centre in the centre of Belfast. From here, it is possible to reach any of the towns along the trail.