Hiking in Snowdonia

Snowdonia — now officially Eryri, its Welsh name — is the most concentrated mountain country in Britain south of the Scottish border. The Snowdon massif at the centre, Tryfan and the Glyderau to the north, the Carneddau plateau beyond, the Rhinogydd to the south, and the Llyn Peninsula reaching west into the Irish Sea: 823 square miles of mountain National Park, half the population speaking Welsh as a first language, and a hiking culture that goes back to the first ascents of Snowdon in the 1700s. This is the complete guide to hiking in Snowdonia: routes, summits, weather, transport and what hiking here actually requires of you.

At a glance

Why hiking in Snowdonia is different

Snowdonia is the most-walked mountain range in Britain by a clear margin — Snowdon alone sees about 500,000 ascents a year. The reason is geometry. The Snowdon massif rises 1,085 metres above the village of Llanberis, which sits at near sea level — one of the largest vertical relief jumps in the UK over the shortest horizontal distance. You can see Snowdon's summit cone from the train at Bangor and stand on the top three hours later from the village below.

The geology gives it character. Ordovician volcanic rock laid down 460 million years ago produced sharp ridges and steep mountainsides — Crib Goch, the Cantilever Stone on Glyder Fach, the Castle of the Winds on Glyder Fawr, the entire shape of Tryfan. The slate of Llanberis is a younger Cambrian deposit, exposed by 19th-century quarrying that left the dramatic terraced cliffs of the Dinorwig and Penrhyn quarries.

Walking culture here is bilingual and culturally specific. The Welsh names matter — Yr Wyddfa for Snowdon, Eryri for the National Park, Pen-y-Pass for the high col at the centre of the network. Llanberis is the working centre, not just a tourist village — the Royal Mountaineering Club traces its history through the village's pubs, and the National Mountain Centre at Plas y Brenin is the UK's primary mountain leader training centre.

What Snowdonia is not is gentle. Half a million Snowdon ascents include thousands of people who didn't realise they were on a mountain. Mountain Rescue Wales callouts on the Snowdon massif average 250 a year — second only to Scotland's Lochaber team. Weather changes faster than the Lakes; cloud descends fast; the Carneddau plateau is genuinely featureless in mist. Plan accordingly.

The routes worth knowing

The Snowdonia Way (formal name: Wales' first long-distance route officially launched 2018) is the only multi-day trail that crosses the National Park. It deliberately avoids the high summits — meaning a full week of walking that's tougher than it sounds (the Bwlch terrain between Cnicht and Moelwyn Mawr can feel proper-mountain) without ever requiring scrambling or technical skill. The route winds through Aberdyfi, Dolgellau, Trawsfynydd, Beddgelert, Capel Curig and finishes at Conwy on the north coast.

How to choose the right Snowdonia hike for you

First time? Llanberis Path on Snowdon, then Y Garn.

The Llanberis Path is the gentlest of the six standard Snowdon routes — 9 miles round trip on a well-graded mountain-railway track, 950m of ascent over 4.5 miles, no scrambling. Most first-timers do it in 5-6 hours. After that, Y Garn from Ogwen Cottage (4 miles, 700m, a stand-alone Glyderau summit with one of the best views in the National Park) is the right next step.

Comfortable hill walker? Glyder Fawr + Glyder Fach.

The Glyder horseshoe from Ogwen via Devil's Kitchen — up to Glyder Fawr, across the Castle of the Winds to Glyder Fach, back down via the Miners' Track — is one of the great mountain days in Britain. 6 miles, 850m of ascent, no scrambling required but real mountain feel throughout.

Want to scramble? Tryfan North Ridge.

Tryfan's North Ridge is the most accessible Grade 1 scramble in the UK. There's no path to the summit — you pick your line through the rock, using hands as much as feet for the last 200m. Most people who do this once never forget it. Do it in dry conditions, with a partner, and don't underestimate the descent.

Multi-day? The Snowdonia Way.

97 miles, 7-9 days, hiking (not scrambling) throughout. It's an honest week of mountain walking in Wales' best country, with the bonus of finishing on the Conwy coast. Trail-side accommodation is good if booked ahead; the Cambrian railway line covers the southern stretch for bail-out options.

When to go: Snowdonia hiking by season

May, June and September are the optimal months. Long daylight, settled spells between weather systems, no midges at altitude. May has the longest pre-summer photogenic windows. July and August bring the crowds — Pen-y-Pass car park requires booking from May to September now, and the popular Pyg / Miners' / Snowdon Ranger paths can have 200-person queues at busy weekends. Llanberis Path is wide enough to absorb the traffic; the other paths feel more pressed.

October and November are the photographers' favourites — autumn colour through the Conwy Valley and the Llanberis Pass, cool dry days, much-reduced foot traffic. December to March the high tops are in winter mountaineering conditions — routine snow on Snowdon, regular ice on the Glyderau, full winter kit (ice axe, crampons, helmet) genuinely required on most summits above 700m. Tryfan and the Carneddau in February are some of the best winter hill days in Britain for the skilled.

Snowdonia weather is genuinely Atlantic. The western valleys (Beddgelert, Nantlle) get more rain than the eastern (Capel Curig, Betws-y-Coed). Mountain Weather Information Service publishes a dedicated Snowdonia forecast at mwis.org.uk — the standard reference.

Getting to Snowdonia without a car

Two main rail routes serve the National Park. The North Wales Coast Line from London Euston (Avanti West Coast, ~3h direct to Bangor) covers the northern Snowdonia approach — Bangor to Llanberis by the T2 / Snowdon Sherpa bus (~30 min) puts you in the climbing village. From Bangor the Conwy Valley line runs inland to Betws-y-Coed (~30 min) for the eastern Snowdonia base. From the south, the Cambrian line (Transport for Wales from Birmingham/Shrewsbury) covers Machynlleth, Aberdovey, Tywyn and Pwllheli — the western approach. The Snowdon Sherpa S1-S4 bus network is the genuinely excellent piece — routes covering Pen-y-Pass, Ogwen, Beddgelert, Llanberis, Nant Peris and Capel Curig, with a single day-ticket covering the whole network. It's the best car-free public-transport setup for a UK mountain range.

Where to base yourself

Llanberis is the climbing-and-walking centre — foot of Snowdon, Pen-y-Pass 10 minutes by bus, the climbing pubs (Padarn Lake, Heights) where the mountain community has gathered for 50+ years. Capel Curig is the central crossroads — access to Tryfan, the Glyderau, the Carneddau, Plas y Brenin. The Tyn-y-Coed Hotel and the Bryn Tyrch Inn are the established walker bases. Betws-y-Coed is the eastern gateway — train access, the Conwy Valley, Snowdonia's gentler walks. Beddgelert in the south is the quieter Snowdonia — access to Cnicht, the Aberglaslyn Pass, the Rhinogydd. Dolgellau covers the southern Snowdonia summits (Cadair Idris) and links to the Cambrian coast.

Kit specific to Snowdonia

A 1:25,000 OS map (Explorer OL17 covers Snowdon and the Conwy Valley; OL18 covers the Harlech and Bala area) is non-negotiable for any walk above 500m here — the path network is dense and the cloud descends fast. A waterproof jacket with hood (not a packable rain shell), waterproof overtrousers, and proper hill boots are the standard summer kit. For Tryfan and the Glyderau in winter, add ice axe, B2-compatible crampons, a helmet for the scrambling sections, and winter-rated gloves. The Snowdonia mountain weather forecast is the standard daily reference; check it before every walk above 600m. For winter conditions, the British Mountaineering Council's Welsh winter conditions page compiles route reports from mountaineers active in the range. Bilingual signage is real; a few Welsh terms are useful (cwm = valley, bwlch = pass, pen = head/summit, y/yr = the).

Common questions about hiking in Snowdonia

Which is the easiest route up Snowdon?

The Llanberis Path from Llanberis station is the longest, gentlest route up Snowdon — 9 miles round trip, 950m ascent, on a well-graded path that follows the mountain railway most of the way. It's the path for first-timers and family groups. The Pyg Track and Miners' Track from Pen-y-Pass are shorter but rockier; the Crib Goch ridge is a Grade 1 scramble and not a hiking route.

Is the Snowdon Horseshoe a hike or a scramble?

The Snowdon Horseshoe (Crib Goch — Snowdon — Y Lliwedd) is a Grade 1 scramble with significant exposure on Crib Goch — not a hiking route, despite being widely listed as one. It's one of the most committing mainstream "walks" in Britain. The Miners' Track + Pyg Track loop is the proper hiking equivalent.

Can I hike Tryfan?

Tryfan's normal North Ridge route is a Grade 1 scramble, not a hike — there's no path to the summit, and the last 200m involves using hands as much as feet. The "easier" Heather Terrace approach is still scrambling. For comparable Snowdonia summits that are proper hikes, look at Y Garn, Glyder Fawr (via Devil's Kitchen), or Carnedd Llewelyn.

How long does the Snowdonia Way take?

The Snowdonia Way is a 97-mile route from Machynlleth in the south of the National Park to Conwy on the north coast — typically walked in 7-9 days. It deliberately threads between the major Snowdonia summits rather than over them, so daily ascent is more manageable than the routes the Snowdon massif would suggest.

Are there hiking restrictions in Snowdonia?

No general restrictions, but check three things: (1) the Pen-y-Pass car park fills early on summer weekends and now requires booking from May to September; (2) some Snowdonia farmland has lambing closures from March to May; (3) the Cwm Idwal section can close in extreme winter conditions when the Devil's Kitchen waterfall is iced over and the path is genuinely dangerous.

What else is in this region

Snowdonia rewards multi-activity weeks. Snowdonia rock climbing covers the great mountain crags — Tryfan, Lliwedd, the Llanberis Pass, the Dinorwig slate. Coed y Brenin mountain biking is the UK's first purpose-built MTB trail centre, on the southern Snowdonia border. Hells Mouth surfing on the Llyn is the obvious sea-day. For a broader regional view see the North Wales region page. Or jump to Hiking in Scotland once you're ready to step up to Munros, or Hiking in the Lake District for English mountain country at a similar scale.

1 route in Snowdonia

Where to hiking
in Snowdonia.

The Snowdonia Way Hike

The Snowdonia Way is a relatively new 97-mile route from Machynlleth in the south of the National Park to Conwy on the north coast.…