Start : Trassey Car Park, Trassey Rd, Down, Newcastle (BT33 0QA)
(S) From Trassey Car Park, walk towards Trassey Road then turn immediately left (South) then left again.
(1) Cross the stile and follow the track South, passing two further gates before you reach open mountain terrain. At the final gate, a stone wall can be seen extending West; this is your guide for the next part of the route. (From waypoint (1) to the next one, you walk for 1.1 Km or so).
(2) Turn right (South-West) onto a footpath and follow the wall, passing beneath the steep Northern slopes of Slieve Meelmore. After almost 2 Km you arrive at a stream that drains the Happy Valley between Slieve Meelmore and Slieve Meelbeg. You now climb across a 500m summit on the most mountainous section of the route.
(3) From Happy Valley, continue to follow the path around the northwestern base of Slieve Meelbeg. You soon arrive at Fofanny Reservoir.
(4) Cross a metal footbridge and head along the eastern bank of the reservoir, following a narrow path flanked by gorse bushes. A short section through pine trees then brings you to a road : Slievenaman Road.
(5) Turn left (South-West) here and walk along the tarmac for 900m to reach Blue Quarry car park (also known as Ott Mountain car cark).
(6) Follow the mountain trail climbing the stone steps and cross the stile above the car park. Follow a faint grassy trail directly up the slope to the top of the ridge.
(7) Turn Right Northernly on the summit of Slevenamuck, the first hill you will climb. The 500m-high summit of Butter Mountain, the highest point of the route, lies just to the left, and provides fantastic views over the northwestern Mournes. Now follow the ridge North-East to a fence, which is marked by Mourne Way signs. Turn left and follow the fence for 600m.
(8) Now turn left (South-West) and follow a faint track through boggy tussock grass, past the summit of Spaltha. Continue to the broad col beneath Spelga Mountain, then follow the tracks curving to the right (west) and descend steeply, keeping just south of a stream. Keep descending until you meet a stone wall, where you rejoin the waymarkers. Turn left and contour along the wall to reach the road at Spelga Pass. (E)
Turn left on the road (South-East) in the direction of Spelga Resevoir to join a Bed and Breakfast, a parking and toilets.