Slieve Binnan, Slieve Lamagan & Slieve Donard loop — Mourne

This difficult 12.0-mile (19.4 km) loop through the Mourne Mountains takes you over Slieve Binnian, Slieve Lamagan, and Slieve Donard, requiring about 7 hours and 18 minutes to complete. You will gain 4249 feet (1295 metres) in elevation, traversing diverse and demanding terrain. Expect to scramble over granite boulders on Slieve Binnian, known for its distinctive rocky tors like the Back Castles. The route offers panoramic views, including vistas down to the Silent Valley Reservoir and across the Irish Sea from Slieve Donard's summit. You will encounter heather, granite outcrops, and the historic Mourne Wall guiding your way.

This challenging loop demands a very good level of fitness and experience. You should be prepared for sustained steep climbs and descents, along with rough and uneven terrain. Given the potential for challenging weather conditions, sturdy footwear and appropriate outdoor clothing are essential. Make sure you have strong navigation skills, as paths on Slieve Lamagan can become indistinct. Carry sufficient supplies for the 7-hour and 18-minute duration.

This loop is notable for combining three iconic Mourne peaks, including Slieve Donard, Northern Ireland's highest mountain, and Slieve Binnian, which offers some of the best views in the region. The historic Mourne Wall, a 31-kilometer dry-stone wall built over nearly 20 years, serves as a significant landmark and navigational aid across parts of the trail. You will experience diverse landscapes, from rocky tors and granite outcrops to views of loughs and reservoirs. Completing this physically demanding route offers immense satisfaction and a true sense of accomplishment.