Rhinog Fawr
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
- 720 m · 2,362 ft
- Prominence
- 366 m
- Grid reference
- SH 65700 29012
- Coordinates
- 52.84181, -3.99544
- County / area
- Gwynedd
- OS Landranger
- 124
- OS Explorer
- OL18W
- Summit feature
- rock 8m W of cairn
- Key col
- SH665281 (354 m)
About Rhinog Fawr
Rhinog Fawr stands in the Rhinogydd of southern Eryri, the third highest summit of that range behind Y Llethr and Diffwys. Rhinog Fach lies to the south across the pass of Bwlch Drws Ardudwy, and Moel Ysgyfarnogod to the north.
As across most of the Rhinogydd, the ground is hard sedimentary rock smothered in heather, which slows walking considerably. Llyn Du, a small tarn set among crags at around 510 m, sits below the summit. The Roman Steps pass gives the usual line of approach from the north-east or north-west.
Background written from facts in the Wikipedia article on Rhinog Fawr (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 52.842, -3.995. Plan your finish with the daylight safety planner.
Summit weather live
Loading forecast for the summit (720 m)…
Forecast adjusted to summit altitude. Weather data from MET Norway (CC BY 4.0).
Finding the summit
rock by trig point 25m W at SH 65675 29012 is 1m lower; rock 5m S of cairn is 10cm lower.
The recorded summit point is rock 8m W of cairn. 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
- 23-Oct-23
- Drop measured from
- SH665281 · 354 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.
Nearest listed peaks
| Peak | Height | Distance |
|---|---|---|
| Rhinog Fach | 711.6 m | 2.1 km |
| Y Llethr | 756 m | 3.3 km |
| Crib-y-rhiw | 681.2 m | 4.2 km |
| Diffwys | 750.4 m | 5.6 km |
| Moel Ysgyfarnogod | 623 m | 5.6 km |
| Foel Penolau | 614.4 m | 5.8 km |