Y Lliwedd
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
- 897.9 m · 2,946 ft
- Prominence
- 153.8 m
- Grid reference
- SH 62245 53339
- Coordinates
- 53.05948, -4.05705
- County / area
- Gwynedd
- Region
- Snowdonia
- OS Landranger
- 115
- OS Explorer
- OL17W
- Summit feature
- rock
- Key col
- SH 6195 5371 (744.1 m)
About Y Lliwedd
Y Lliwedd is linked to Snowdon, and its eastern side falls away in steep cliffs above Llyn Llydaw and Glaslyn. For anyone coming up by the Miners' or Pyg tracks it is the peak that dominates the view, and walkers on the Snowdon Horseshoe cross it as part of the round.
The mountain has a long climbing history. George Mallory served much of his early apprenticeship on these rocks, the north face was being explored by the close of the 19th century, and in 1909 it became the subject of Britain's first climbing guidebook, The Climbs on Lliwedd. The 1953 British Everest Expedition also trained here in some quantity.
Background written from facts in the Wikipedia article on Y Lliwedd (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
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- Sunset
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- Daylight
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- Civil twilight ends
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Computed astronomically for 53.059, -4.057. Plan your finish with the daylight safety planner.
Summit weather live
Loading forecast for the summit (898 m)…
Forecast adjusted to summit altitude. Weather data from MET Norway (CC BY 4.0).
The Y Lliwedd group
3 other listed summits sit in the same prominence group, with Y Lliwedd as the independent hill at its head.
| Summit | Height | Drop |
|---|---|---|
| Y Lliwedd East Top | 893 m | 20 m |
| Lliwedd Bach | 819 m | 21 m |
| Gallt y Wenallt | 620 m | 23 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 |
|---|---|---|
| Y Lliwedd East Top | 893.2 m | 0.2 km |
| Lliwedd Bach | 819 m | 0.5 km |
| Snowdon - Yr Wyddfa | 1085 m | 1.6 km |
| Crib Goch | 923 m | 1.9 km |
| Gallt y Wenallt | 619.7 m | 2 km |
| Crib y Ddysgl | 1065.3 m | 2.2 km |