Cadair Idris - Penygadair
4 classifications here — Trail 100, Marilyn, HuMP and Simm — belong to lists OpenFell holds only part of, so they have no list page. See how far the coverage goes.

- Height
- 892.7 m · 2,929 ft
- Prominence
- 606 m
- Grid reference
- SH 71117 13039
- Coordinates
- 52.69962, -3.90878
- County / area
- Gwynedd
- Region
- Dolgellau to Machynlleth
- OS Landranger
- 124
- OS Explorer
- OL23W
- Summit feature
- rock near trig point
- Key col
- SH 7568 1391 (286.7 m)
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
Conditional Right to roam: Right to roam only on mapped CRoW open access land.
Permission needed Wild camping: Permission needed everywhere.
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
- —
- Sunset
- —
- Daylight
- —
- Civil twilight ends
- —
Computed astronomically for 52.700, -3.909. Plan your finish with the daylight safety planner.
Summit weather live
Loading forecast for the summit (893 m)…
Forecast adjusted to summit altitude. Weather data from MET Norway (CC BY 4.0).
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 | Total length | From summit |
|---|---|---|
| Cambrian Way | 483 km | over the top |
Route lines © OpenStreetMap contributors (ODbL); distance from the summit computed by OpenFell.
Get food nearby
3 places to eat or drink within 10 km of the summit, rated under the Food Hygiene Rating Scheme (Scotland runs its own Food Hygiene Information Scheme, a pass/fail equivalent).
| Place | Type | Rating | Distance |
|---|---|---|---|
| Gwesty Minffordd Hotel | Hotel/bed & breakfast/guest house | 5 out of 5 | 2.6 km · SE |
| Pen Y Bont Hotel | Hotel/bed & breakfast/guest house | 5 out of 5 | 2.6 km · SE |
| Tyn Y Cornel Hotel | Hotel/bed & breakfast/guest house | 5 out of 5 | 2.6 km · SE |
Classifications and ratings are the local authority's own and can be coarse — this is a lead, not a guarantee of opening hours or that food is served to non-residents. Follow a name through to the official rating page to check, and confirm before you rely on it.
Food hygiene data from the Food Standards Agency and Food Standards Scotland (Open Government Licence v3.0). Distances and directions computed by OpenFell from the summit.
The Cadair Idris - Penygadair group
8 other listed summits sit in the same prominence group, with Cadair Idris - Penygadair as the independent hill at its head.
| Summit | Height | Drop |
|---|---|---|
| Mynydd Moel | 863 m | 67 m |
| Cyfrwy | 811 m | 31 m |
| Craig Cwm Amarch | 792 m | 79 m |
| Gau Graig | 684 m | 25 m |
| Craig-las | 661 m | 101 m |
| Craig-y-llyn | 622 m | 132 m |
| Braich Ddu | 546 m | 54 m |
| Esgair Berfa | 507 m | 78 m |
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
| Peak | Height | Distance |
|---|---|---|
| Cyfrwy | 811 m | 0.8 km |
| Craig Cwm Amarch | 791.9 m | 0.9 km |
| Mynydd Moel | 863 m | 1.8 km |
| Gau Graig | 683.7 m | 3.4 km |
| Craig-las | 661 m | 3.4 km |
| Mynydd Fron-fraith | 514 m | 3.9 km |