Ben Cruachan is a Munro of 1,127 m in Argyll and Bute. It is the highest of the 72 register hills recorded in Argyll and Bute; the next is Beinn Dorain at 1,076 m, 51 m lower.
Its drop of 880 m is the 14th greatest of the 1,140 hills here. In the database's Glen Etive to Glen Lochy region it is the highest of 25 register hills, above Meall a' Bhuiridh and 23 others. The key col lies 16.3 km away to the north-east, at 247 m. Its drop is the 10th greatest among the Munros, behind Ben Nevis at the top. It overtops all four of its nearest neighbours; the tallest of them, Stob Daimh, reaches 999.2 m. All four of its nearest neighbours lie to the east, so it stands at the western edge of its group. It is 347.9 m above the average height of the 72 register hills in Argyll and Bute. The summit is marked by a trig point.