Fiarach is a Graham of 652.2 m in Stirling. All four of its nearest neighbours are higher, up to Ben Oss at 1,029.8 m.
It sits below Beinn Dubhchraig, only 3.8 km to the west and 326.4 m higher. The higher hill nearest to it, Beinn Dubhchraig, is a Munro, 3.8 km to the west. It is 208.2 m below the average height of the 33 register hills in Stirling.