[4][5] Benbrack is situated on its own small massif to the north of the core Twelve Bens mountain range in the Connemara National Park in County Galway, Ireland.

[5][6] The name is most likely derived from the lumps of quartzite stones and boulders that are strewn across the summit of Benbrack.

[2] Benbrack sits on its own small massif, with Benbaun and the large massif of the core Twelve Bens lying to the south, connected via a deep col called Maumnascalpa to the Bens of Muckanaght 654 metres (2,146 ft) and Benfree 638 metres (2,093 ft); to the north is Kylemore Lough (and Kylemore Abbey), and across the Lough is the massif of Garraun, which is part of the wider Twelve Bens/Garraun Complex Special Area of Conservation.

[6][7] To the west of Benbrack, at the end of a long spur, is the subsidiary, and similarly named summit of Knockbrack at 442 metres (1,450 ft) (Irish: Cnoc Breac, meaning "speckled hill").

[6][8][9] Benbrack is also climbed as part of the Glencorbet Horseshoe, a 14-kilometre 6–7 hour circuit of Kylemore River, usually done counter-clockwise, which takes in the peaks of Benbaun (477 metres), Benbrack, Muckanaght (optional), Benfree, Benbaun (729 metres), and ending at Knockpasheemore.