I followed Liz50's description (below) from the west, starting up the forestry track from the Leitrim Beg standing stone (V849512 I). This takes you quickly up onto the higher reaches of Nareera, where sheep tracks run up to the SW Top above Lough Keel, a brilliant viewpoint. I detoured north to take in Nareera N Top for bagging reasons, but it's probably a better walk if you don't. A cornucopia of rocky lumps and bumps and wild perched lochans takes you round to Sugarloaf itself and another stunning summit view. Because of the access problems lower down it's best to retrace your steps over the first two bumps then use the re-routed Beara Way to get back to Nareera N Top and an easy descent. As good a way of spending a (longish) half day as you're likely to find anywhere. Linkback: https://mountainviews.ie/summit/319/comment/20409/