This is a walk of about 12km, most of it on a good grassy walking surface. There are breathtaking views all the way. It follows the line of the escarpment above the shore on the east side of the Trotternish Peninsula, reaching a hight of 392m above the Sound of Raasay on the way. This is a quiet, unpopulated, road-free and seldom visited part of Skye, overshadowed (almost literally) by the famous Trotternish Ridge. It is, though, an excellent walk in its own right.
To start and finish in Portree, you should take the service bus from Portree Square to the end of the Storr Lochs. (Route 57A - see the Stagecoach timetable linked from here)
From the road end at NG505525, follow the minor road along the loch side, over the dam and on to its end at the top of the Storr Lochs Hydro-electric station. A quick detour to your left behind the top building will take you to an excellent viewpoint overlooking Bearreraig Bay. But he route of this walk goes the other way. You should head south up the hill towards a distinctive post - actually a coastguard lookout point. The first big views of the day open up here, with 360° of interest. Keep to the top of the ridge, passing Holm Island and the deserted settlement of Holm itself on the shore far beneath you. This part of the ridge is broken by a few valleys, but the route is always obvious - just keep to the high ground.
Once south of Holm, go inland over soft moorland, avoiding the bogs as much as you can, to reach low crags at NG510500. It is not difficult to find your way up the crags here to reach good grassy ground on the top. From this point the walk is a real delight, especially if you have chosen a day with good visibility. The route takes you over the summit of Fiurnean, across one bealach to Creag Ulatota and then another one before climbing to the highest point of the walk, Sithean Bhealaich Chumhaing.
Now the views of Raasay, the hills of the Scottish mainland and the Trotternish cliffs begin to be joined by one of the Cuillin. As you continue south, Portree Bay and then Portree village come into sight as well. The safest decent into Portree is to head right, away from the cliff edge, towards the high point at Bealach Cumhang. Then come down steeply by the burn at NG503446 to arrive on flat fields. Staying parallel to the shore, cross this raised beach to a wall where a gate (NG497441) takes you onto the well used Scorrybreac path. Follow it along the coast and you will reach the public road near the Cuillin Hills Hotel in Portree.