Cadair Idris - Penygadair

About Cadair Idris - Penygadair

Penygadair is the summit of Cadair Idris, the mountain at the southern end of the Snowdonia National Park near Dolgellau, in the Meirionnydd part of Gwynedd. The name is also written Cader Idris.

The mountain is built largely of Ordovician igneous rock and carries a textbook set of glacial features: cwms, moraines, striated rock surfaces and roches moutonnées. It is among the most walked peaks in Wales, and at roughly 893 m ranks as a Hewitt and a Marilyn.

Background written from facts in the Wikipedia article on Cadair Idris (CC BY-SA 4.0). Heights, prominence and grid references come from the Database of British & Irish Hills, not from Wikipedia.

Access rights here

General position for Wales — local byelaws, seasonal restrictions and closures can override it. Full details: access rights in Wales · check another location.

Daylight at this summit today

Sunrise

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Sunset

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Daylight

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Civil twilight ends

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Computed astronomically for 52.700, -3.909. Plan your finish with the daylight safety planner.

Finding the summit

The recorded summit point is rock near trig point. On broad or flat summits the obvious cairn is not always the true high point.

Survey method

Leica RX1250

Record revised

03-Jun-24

Drop measured from

SH 7568 1391 · 286.7 m

Survey notes are field observations recorded in the Database of British & Irish Hills (v18.3, CC BY 4.0) by the hill-surveying community.

Long-distance paths past this hill

One waymarked long-distance route runs within 2.5 km of the summit — useful if you are linking this hill into a longer walk, or want a made path for the approach.

Route lines © OpenStreetMap contributors (ODbL); distance from the summit computed by OpenFell.

The Cadair Idris - Penygadair group

6 other listed summits sit in the same prominence group, with Cadair Idris - Penygadair as the independent hill at its head.

Grouping is by prominence alone: a summit belongs to the nearest higher Marilyn it connects to without a deeper intervening col. Over a large massif that can gather hills no one would walk in a single day, and which few would describe as parts of the same mountain — it is a measure of independence, not a suggested route.

Nearest listed peaks