Wales's premier national park featuring Mount Snowdon (highest peak in Wales), dramatic mountain scenery, medieval castles, and stunning coastline. Adventure activities include climbing, hiking, and zip-lining.
Snowdonia National Park — Eryri in Welsh — covers 823 square miles of mountainous landscape in northwest Wales and was designated the UK's third national park in 1951. The park takes its English name from Snowdon (Yr Wyddfa in Welsh), which at 1,085 metres is the highest peak in England and Wales, standing at the centre of a horseshoe of ridges that form one of the most dramatic mountain groupings in Britain. Six walking routes ascend Snowdon, ranging from the popular Llanberis Path (9 miles round trip, suitable for fit walkers without technical experience) to the more demanding Snowdon Horseshoe ridge circuit. The Snowdon Mountain Railway, a rack-and-pinion steam and diesel service from Llanberis, operates seasonally from late March to early November and carries passengers to near the summit — the only mountain railway in England and Wales. The summit visitor centre, Hafod Eryri, is open when the railway operates and provides exceptional views across Anglesey, the Irish Sea, the Pembrokeshire coast, and on exceptional days the mountains of Ireland. Beyond Snowdon, the park contains the Ogwen Valley with Tryfan's rocky north ridge — arguably Wales's finest rock scramble — and Cwm Idwal with its National Nature Reserve of glacial geology. Betws-y-Coed serves as the main town and provides accommodation, cycling hire, and access to the Swallow Falls. The Llanberis Pass is a spectacular glacially carved corridor with roadside climbing crags. Zip World near Bethesda operates the world's fastest zip line and a network of underground adventure experiences in former slate caverns. Medieval Harlech Castle and Caernarfon Castle — both UNESCO World Heritage Sites — lie within or just outside the park boundary.
Good to know
- Hours
- Open 24/7
- Best for
- hikers, adventure seekers, nature lovers, photographers
Location
Snowdonia National Park, Wales
53.0000, -4.0000 View on map
Highlights
- Snowdon summit at 1,085 metres — the highest peak in England and Wales, reachable by foot or mountain railway
- Snowdon Mountain Railway from Llanberis — the only mountain rack railway in England and Wales, operating seasonally
- Tryfan's north ridge in the Ogwen Valley — a classic rock scramble that requires hands and feet on the final section
- Zip World Velocity at Penrhyn Quarry — one of the world's fastest zip lines at up to 100mph
- Caernarfon and Harlech castles — UNESCO World Heritage Sites at the edge of the national park
Tips for visiting
- Take the Snowdon Mountain Railway if not hiking to the summit
- Summit hike takes 5-7 hours round trip
- Visit Zip World for the world's fastest zip line
- Explore Caernarfon and Conwy castles
When to visit
May and June offer the best combination of clear summit visibility, manageable crowds, and settled weather. July and August are warmest but the most crowded, with Snowdon summit queues significant at mid-day. Autumn (September-October) provides excellent colours and fewer walkers, though the railway ceases operation in November.
Accessibility
The Snowdon Mountain Railway provides the only accessible route to near the Snowdon summit for visitors unable to walk the mountain trails. The Hafod Eryri summit building is wheelchair accessible. Valley trails in Beddgelert Forest and around Llyn Padarn near Llanberis offer relatively flat accessible walking. Most mountain routes involve rough, steep terrain unsuitable for wheelchair users.
Frequently asked questions
Is it better to walk up Snowdon or take the railway?
Both are valid. The Llanberis Path is the most accessible walking route and takes 4-6 hours return for most adults. The mountain railway carries visitors to the summit in 60 minutes from Llanberis and must be pre-booked; it operates seasonally and subject to weather. Many visitors walk up and take the train down.
When does the Snowdon Mountain Railway operate?
The railway typically operates from late March to early November. Services are subject to weather cancellation; high winds can stop the service at short notice. Booking tickets in advance is strongly recommended for summer dates.
Is Snowdonia suitable for families with young children?
Yes — the mountain railway, Swallow Falls near Betws-y-Coed, and Zip World's family-orientated underground experiences are all suitable for children. Younger children should not attempt the Snowdon summit walks, but shorter lakeside and valley paths in Cwm Idwal and Beddgelert are accessible.