Creigiau Gleision is a Hewitt of 675.9 m in Conwy. All four of its nearest neighbours are higher, up to Carnedd Llewelyn at 1,061.8 m.
It sits below Pen Llithrig y Wrach, only 1.5 km to the north-west and 122.7 m higher. On the Hewitts height ladder it sits between Sheffield Pike (676.1 m) and An Bheann Mhor (674.7 m). The highest point is recorded as single stone on rock, not a cairn.