← All nine ranges

The Rhinogydd

Y Rhinogydd · Western Snowdonia

The Rhinogydd are widely regarded as the toughest walking terrain in Wales — not because of height, but because of the sheer, unrelenting roughness underfoot. Tightly packed gritstone outcrops, deep heather and a near-total absence of paths make this range a serious proposition even for experienced hillwalkers, rewarding them with a sense of true wilderness rare anywhere else in Britain.

Interactive terrain · tap a marker for peak info

Difficulty

Hard

Terrain

Bare gritstone outcrops, deep heather, pathless terrain

Best for

True wilderness · Navigation practice · Avoiding crowds entirely

Key peaks

Rhinog Fawr

720m

The most famous summit in the range, a rocky tower above Cwm Bychan.

Hard, rough pathless terrain

Rhinog Fach

712m

Rhinog Fawr’s smaller twin, separated by a dramatic, steep-sided col.

Hard

Y Llethr

756m

The highest point of the range, with a surprisingly smooth grassy summit ridge.

Moderate once gained, hard approach

Diffwys

750m

The southern anchor of the main ridge, overlooking the Mawddach estuary.

Moderate

Clip

629m

A rocky knoll on the ridge north of Diffwys.

Moderate

Moelfre

589m

An outlying hill to the east, lower but equally rough underfoot.

Moderate

Foel Penolau

614m

A minor northern summit guarding the approach from Cwm Bychan.

Moderate, pathless approach

Craig Wion

498m

A rocky outcrop on the northern fringes, often combined with Foel Penolau.

Moderate

Suggested routes

The Rhinog Twins

A tough there-and-back over Rhinog Fawr and Rhinog Fach from Cwm Bychan.

10 km·6–7 hrs

Y Llethr & Diffwys Ridge

The smoother southern ridge, with the best reward-to-effort ratio in the range.

13 km·6 hrs

Full Rhinogydd Traverse

A serious full-length traverse of the range from north to south — for experienced parties only.

22 km·10+ hrs

Mountain weather

Safety & weather

  • There are almost no real paths — progress is far slower than distance alone suggests.
  • Deep heather hides ankle-breaking rock; this terrain has a high injury rate.
  • Mobile signal is poor to non-existent across most of the range.

Full immersive 3D experience

Built from real elevation data — drag, orbit and walk the actual terrain.