The Glyderau (a Welsh plural form, also known in English as the Glyders) are a mountain group in Snowdonia, North Wales. The name derives from the highest peaks in the range, Glyder Fawr and Glyder Fach. According to Sir Ifor Williams, the word "Glyder" derives from the Welsh word "Cludair", meaning a heap of stones.
Two peers. Y Garn from Gwastadnant, then Mynydd Perfedd and Carnedd Filiast. Return via Marchlyn Mawr and Sinorwig Quarries. 20km 1200m ascent/descent
