Glas Maol is a Munro of 1,067.7 m in Angus. It is the highest of the 10 register hills recorded in Angus; the next is Tom Buidhe at 957.8 m, 109.9 m lower.
It is also on the county tops list, as the highest point of its historic county. It overtops all four of its nearest neighbours; the tallest of them, Cairn of Claise, reaches 1,063.1 m. It is 247.5 m above the average height of the 10 register hills in Angus. The summit is marked by a trig point.