Slieve Donard and Millstone Mountain Loop from Newcastle

The Slieve Donard and Millstone Mountain Loop from Newcastle is a 9.3 km looped trail that starts and ends in Newcastle, County Down, Northern Ireland. Based on our data, the hike is graded as Difficult. For information on how we grade trails, please read measuring the difficulty of a hiking trail on hiiker. Also, check our latest community posts for trail updates. This hike can be completed in approx 3 hrs 14 mins. Caution is advised on trail times as this depends on multiple variables. For more info read about how we calculate hike time.