An Gearanach reaches a height of 982 metres (3222 feet) making it Munro number 167 in height order and with a prominence of 151 metres it just qualifies as a Marilyn. It is part of a group of mountains commonly called the Mamores which lie between Loch Leven and Glen Nevis and consist of 10 Munros and two Corbetts. The translation of the mountains name from Gaelic is uncertain with some publications giving it as short ridge from Gearr Aonach while others give a translated name of the complainer or the sad place.