Park at the small car park at the top of the Glen Massan road just beyond Stonefield Farm.
(S/E) Follow the unsurfaced road through the Glen Massan estate for about three kilometres.
(1) Two metres beyond a stone cottage, the track crosses the River Massan and beyond the bridge, a path is signposted for walkers up to the right. This is where the real climb begins. The path climbs quite steeply as it passes through mature conifer forest and finally leads you to the open moorland above.
(2) Continue to climb through open (boggy) grassland to the ridge in front of you. From the ridge are wonderful views of the Clyde estuary to Ben Cruachan and the islands. The ridge continues to the summit.
(3) You are now at the highest peak in Cowal : Beinn Mhor. The most straightforward return route is to retrace your steps. (S/E)