Start : Greenmount Hill Farm car park, Glenhead Rd, Glenwherry, Ballymena BT42 4RF. Grid ref. NW 424 561.
(S) From Greenmount car park, continue a short distance North (straight) along the driveway.
(1) Then turn left across a stone bridge. Climb past a series of fields to a collection of outbuildings. Here the route is signed through several gates and onto a stone track, which leads away from the farm towards open hillside.
(2) After roughly 500m, turn left onto another track. Follow this along a series of fences, slowly gaining height amid the tussock-covered hills. Along the way you’ll need to pass through several gates and junctions, each of which is clearly signed.
(3) You now arrive at a high, flat section of track that contours along the upper slopes of Glenhead. The easy terrain allows plenty of time to appreciate the views. The vista stretches from Agnew’s Hill in the East, past Belfast’s Cave Hill and the windmills on Elliot’s Hill, to the distant peaks of the Mourne Mountains in the south.
When the track starts to descend, turn right and cross a wooden stile. You are now on open mountainside, and signs indicate that you should ‘look for and follow the white posts’. These are weathered and sometimes widely spaced, so it’s worth taking your time to locate each one.
Once across the stile, turn left and follow a series of fences over several hummocks. The ground is sometimes wet underfoot, and there are several stiles and small ditches to negotiate. Though the route passes near the summit of Glenhead (393m), there are no distinguishing features to mark the top. A gradual descent along a fence then brings you to the tarmac of the Shillanavogy Road.
(4) Cross directly over the Shillanavogy Road and begin to climb again on the other side. Rather than following a fence – as you have been doing for the last couple of kilometres – the route now heads North-West across open ground. A short ascent brings you to a prominent marker post on the northeastern slopes of Douglas Top. (A)
(5) Descend North-West until you meet a track, then turn right. Follow the track downhill to a junction marked by a route information board. Now head left, continuing along another track to a prominent waymarker attached to a large, upright rock.
Turn right at the rock and climb across two stiles to reach an expanse of rough heather and grass. A series of white-topped posts leads North-West across the moor, drawing ever closer to the steep, craggy slopes of Slemish. It is something of a relief to reach the cropped grass and firm ground surrounding Slemish itself.
(6) The trail skirts around the southwestern base of the hill, running just beneath a jumble of boulders. After almost a kilometre the car park comes into sight ahead, and a final descent beside a series of wind-sculpted hawthorns brings you to the end of the route. (E)