Trio Triumphs Across Dál Riata Channel Courtesy of Pádraig Mallon between Mull of Kintyre and Ballycastle, Northern Ireland. The Dál Riata Channel Swim, previously known as the Mull of Kintyre Swim, is a newer and shorter 17 km channel swim between Mull of Kintyre in Scotland to Ballycastle in Northern Ireland. The 10.5-mile crossing was first attempted by