34. Causeway Coast Way
In good weather this 33-mile, four-day coastal route from Portstewart to Ballycastle, on the Antrim Coast, is truly spectacular. "Highlights along the trail include the Giant's Causeway and the Carrick-a-Rede rope bridge. Reached via a short diversion after Ballintoy, the bridge spans a 20m-wide chasm between the mainland and a picturesquely craggy island that was once used as a small salmon fishery," explains Jo.