Cadair Berwyn is a Hewitt of 832 m in Powys. It is also on the county tops list, as the highest point of its historic county.
Its closest neighbour in this register, Foel Cedig, is 9.8 km away. It counts towards four lists: Hewitts, Nuttalls, Marilyns and county tops. It stands 164.5 m above its nearest neighbour, Foel Cedig, 9.8 km to the south-west. Of the register hills in Powys, only Pen y Fan stands higher. All four of its nearest neighbours lie to the west, so it stands at the eastern edge of its group. It shares its height of 832 m with Purple Mountain. On the Hewitts height ladder it sits between Purple Mountain (832 m) and High Street (828.5 m). Its nearest higher summit, Pen-aran (840 m, 21.6 km west), is a listed top not profiled here. The highest point is recorded as rocky outcrop, not a cairn.
