At a glance
The Nantlle Ridge is a seven-summit ridge walk in south-west Snowdonia offering outstanding views of Snowdon, the Llŷn Peninsula and Cardigan Bay — with very few visitors. Start from Rhyd-Ddu (Welsh Highland Railway stop). Full traverse is a linear walk from Rhyd-Ddu to Nantlle village: 14 km, 950 m ascent, 6–9 hours. Shorter horseshoe options from Rhyd-Ddu available.
About the Nantlle Ridge
The Nantlle Ridge runs west from Rhyd-Ddu above the old slate-quarrying valley of Nantlle — a landscape shaped by centuries of quarrying that gives the valley a particular melancholy grandeur. The ridge itself is entirely different in character: clean, high and airy, with the kind of views that make ridge-walking in Wales exceptional. To the north-east, the Snowdon massif fills the sky; to the south-west, the finger of the Llŷn Peninsula stretches towards Bardsey Island; below on both sides, the valleys carry that particular green and grey of the Welsh uplands.
The ridge takes in seven named summits: Y Garn (633 m), Mynydd Drws-y-Coed (695 m), Trum y Ddysgl (709 m), Mynydd Tal-y-Mignedd (653 m), Craig Cwm Silyn (734 m — the highest), Garnedd Goch (700 m) and Mynydd Graig Goch (609 m). Each summit offers a slightly different perspective; the high point of Craig Cwm Silyn, in the middle of the ridge, has the widest panorama.
Unlike Snowdon, which receives hundreds of thousands of visitors per year, the Nantlle Ridge attracts a small and appreciative community of walkers who have discovered its quality. On summer weekdays, the ridge can feel almost private. This is exactly the kind of mountain walking North Wales offers to those prepared to explore beyond the famous names.
Route information
- Start — Rhyd-Ddu (LL54 6TN) — car park and Welsh Highland Railway station.
- Full traverse — Rhyd-Ddu to Nantlle village: 14 km, 950 m ascent, 6–9 hours. Linear — transport at both ends required.
- Eastern horseshoe — Y Garn, Mynydd Drws-y-Coed and Trum y Ddysgl from Rhyd-Ddu: approximately 9 km, 700 m, 4–5 hours.
- Grade — Strenuous hill walk. Some narrow sections. Full hill-walking equipment and navigation skills required.
Visiting tips
Getting there
Rhyd-Ddu is on the A4085 south-west of Beddgelert. The car park (LL54 6TN) is adjacent to the Welsh Highland Railway station. In summer, the railway runs from Caernarfon and Porthmadog — ideal for a linear ridge traverse with the train for return.
Logistics for the full traverse
The full ridge ends at Nantlle village, 5 km from Rhyd-Ddu by road. A vehicle shuttle or taxi from Nantlle to Rhyd-Ddu is the simplest solution. Alternatively, walking the eastern summits as a horseshoe from Rhyd-Ddu avoids the logistics problem.
Find it on the map
Frequently asked questions
The Nantlle Ridge is a long mountain ridge in south-west Snowdonia, running roughly east to west above the Nantlle Valley between Rhyd-Ddu and Nantlle village. The ridge takes in seven summits, the highest being Craig Cwm Silyn (734 m), and provides outstanding views of Snowdon to the north-east, the <span lang="cy">Llŷn Peninsula</span> to the west and <span lang="cy">Cardigan Bay</span> to the south. It is widely regarded as one of the best ridge walks in Wales.
The Nantlle Ridge is a strenuous mountain walk — the full traverse involves significant ascent and descent between the summits, some narrow ridge sections and a long day. It is not a scramble, but it requires good fitness, full hill-walking equipment and navigation skills. The ridge is well below the technical difficulty of routes like Crib Goch but more demanding than most valley walks.
The classic traverse starts at Rhyd-Ddu (served by the Welsh Highland Railway — useful for transport logistics) and heads west along the ridge, descending to Nantlle village. This is a linear route requiring transport at both ends, or a vehicle shuttle. The eastern summits (Y Garn, Mynydd Drws-y-Coed, Trum y Ddysgl) can be done as a horseshoe from Rhyd-Ddu alone for a shorter day.
Yes — Rhyd-Ddu station on the Welsh Highland Railway is the ideal starting point for the Nantlle Ridge, making it possible to reach the ridge without a car. The railway runs from Caernarfon and Porthmadog (summer timetable). Combining a steam train ride with the ridge walk is one of the classic days out in Snowdonia.
The Nantlle Ridge is one of the best-kept secrets in Snowdonia — despite being excellent mountain walking, it attracts a fraction of the visitors that neighbouring Snowdon receives. The main reason is simply that Snowdon dominates the region's reputation. Walkers seeking solitude, unspoilt ridge scenery and the same quality of views as Snowdon routes will find the Nantlle Ridge exceptional.