Beinn a Chaorainn is normally climbed in conjunction with Beinn Teallach in a 13km circular route. The hills lie about 2km NW of the Loch Laggan Dam. Beinn a Chaorainn has 3 tops in a north to south running ridge all about the 3400ft mark but the true summit is the middle peak.
The hill is not seen at its best from Glen Spean to the south where most people start from. From this angle its looks rounded and not the most exciting. Its real character lies to the east where the slopes back sharply on to Coire na h-Uamha making some extremely craggy slopes. The corrie rim runs for 1.5km along the crest of the summit ridge and is bitten into continually by small corries and gullies making cornicing a real problem in winter conditions.
From the summit there are ridges running south and north. The south ridge runs to the south top before splitting SW over easy slopes dropping you back to Glen Spean at Roughburn. This is the normal route of ascent. The north ridge runs to the north top before splitting at the head of Coire Buidhe into an east and west ridge taking you to the neighbouring Munros of Beinn Teallach and Creag Meagaidh.
The summit provides an excellent view point to view Munros on either side of Loch Treig to the south and Loch Treig itself.