Y Llethr

About Y Llethr

Y Llethr is the highest mountain of the Rhinogydd in north Wales. The top is flat and grassy with only a small cairn, which suits the character of the southern flanks rather more than the rugged ground on the northern approach.

Diffwys lies to the south and Y Garn to the south-east, with Rhinog Fach to the north and the hill of Moelfre to the west. Approaches from the west start in Cwm Nantcol, either directly or by way of Bwlch Drws Ardudwy and over Rhinog Fach.

Background written from facts in the Wikipedia article on Y Llethr (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 52.813, -3.988. Plan your finish with the daylight safety planner.

Finding the summit

The recorded summit point is ground near slight bend in wall. That distinction matters on broad or flat tops, where the obvious cairn is not always the true high point.

Survey method

Abney level

Record revised

28-Mar-10

Drop measured from

SH699346 · 195 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 Y Llethr group

3 other listed summits sit in the same prominence group, with Y Llethr 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