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North Wales

Top 20 Mountain Passes in North Wales

Best mountain passes in North Wales are characterized by dramatic landscapes and the majestic Snowdonia National Park. This region offers a diverse range of mountain passes, from iconic routes to challenging climbs. These passes provide access to various outdoor activities and showcase significant geological features. The area's terrain makes it a notable destination for those seeking mountain experiences.

Best mountain passes in North Wales

  • The most popular mountain passes is Pen-y-Pass, a parking area and pivotal location within Snowdonia National Park. It is a popular starting point for routes to Yr Wyddfa (Snowdon) and offers panoramic views of surrounding peaks.
  • Another must-see spot is Horseshoe Pass (Bwlch yr Oernant) Climb from Llangollen, a challenging mountain pass. This pass is known for its 6 km climb with an average gradient of 5% and expansive scenery, making it a rewarding challenge for cyclists.
  • Visitors also love Bwlch y Groes, a mountain pass with a summit altitude of 545 meters. Known as "Hellfire Pass," its remote location and dramatic scenery make it a destination for those seeking a true mountain experience.
  • North Wales is known for scenic drives, challenging climbs, and historical routes. The region offers a variety of mountain passes to see and explore, catering to different interests and skill levels.
  • The mountain passes in North Wales are appreciated by the komoot community, with 38 highlights and 82 upvotes, showcasing many popular routes and viewpoints.

Last updated: May 29, 2026

Cnicht Summit

Highlight • Natural Monument

Nicknamed the Welsh Matterhorn, albeit 12,431 feet (3,789 m) lower than its Swiss counterpart, what Cnicht lacks in height it makes up in shapely attractiveness. It is a fantastically pointy, fin-like peak with an irresistible allure. Rising proudly above the hamlet of Croesor, it is the best of the Moelwynion range by far.

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Pen-y-Pass

Highlight • Parking

Right in the heart of northern Eryri (Snowdonia), Pen-y-Pass is superbly located for adventures on the Yr Wyddfa (Snowdon) massif and the Glyderau. It is a popular starting point for the Miners' and Pyg Tracks to Yr Wyddfa, as well as for the exciting scrambles on Crib Goch.

The excellent youth hostel has a rich mountaineering heritage. It was famously the haunt of George Mallory, who became part of Everest legend when he died attempting to be the first person to climb the world's highest peak in 1924. Whether or not he ever made it to the summit is one of the greatest mysteries in adventure history. The hostel's Mallory's Bar, is named in his honour.

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Bwlch Glas Pass

Highlight • Natural Monument

The finger stone at Bwlch Glas marks the point at which the Pyg and Miners' Tracks reach the summit ridge and join the Crib Goch, Ranger and Llanberis Paths. Particularly helpful in poor visibility.

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Bwlch Main Ridge

Highlight • Trail

The narrow ridge of the Bwlch Main (Narrow Pass) is the highlight of the route. Although the ridge is not difficult, it is still exposed with steep slopes on either side. One should be careful when crossing the ridge and stay on the path. In inclement weather, the Bwlch Main can be daunting, especially if you've never climbed an exposed ridge.

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Horseshoe Pass (Bwlch yr Oernant) Climb from Llangollen

Highlight (Segment) • Mountain Pass

At just under 6 km long with an average gradient of 5% and fantastic scenery this climb is really good and rewarding challenge for any cyclist. The first 1.5 km is a gradual introduction to the climb before a couple of steeper ramps need to be overcome. Once you're over these the road sweeps left taking you onto the horseshoe section, where again the road kicks up a couple of times before finally easing off as you kick on towards the summit. If you look right you will see the road below from where you have came and how much you have climbed. The tarmac is quite rough and pitted but still well worth it for the views and the sense of satisfaction when you reach the summit for a coffee and The Ponderosa Cafe.

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Llanberis Pass – Pen-y-Pass Climb

Highlight (Segment) • Climb

Awesome mountain road from Nant Peris in the west to the top of Pen-y-pass in the east. It's a long climb up from Nant Peris or an exciting descent in the other direction. The A4086 follows the Llanberis Pass with historically important rock climbing and bouldering on both sides. Snowdon is to the south and the Glyders to the north.
Café and shop at the car park at the top along with the YHA Pen-y-pass. There is a nice pub in Nant Peris and cafes and shops in Llanberis a bit further down the road,

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Bwlch Penbarras Climb from Llanbedr-Dyffryn-Clwyd

Highlight (Segment) • Viewpoint

A vicious climb from Llanbedr Dyffryn Clwyd which rises at 12% for 2km. Permanent climbing - and one bite will be sure to take any energy out of the legs.

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Black Road Gravel Pass

Highlight (Segment) • Mountain Pass

This pass is an exceptional ride, particularly when the skies are clear. This gravel trail curves around the western extreme of Cadair Idris, bringing you high above the coast to provide amazing views of Barmouth and its bay.

The gravel here can be loose in places but is suitable for touring, hybrid, gravel and mountain bikes. The trail is isolated, far away from roads making it blissful in good weather. It’s exposed, so take care to bring appropriate clothing should the weather close in.

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Bwlch y Groes

Highlight (Segment) • Mountain Pass

The second highest public road mountain pass in Wales this is definitely one to tick off the cycling bucket list. It is narrow and winding so it is recommended to pick a quiet time to cycle up since the stunning views often attract motorists to drive the climb.

The climb is almost 3km long with some quad burning gradients right to the last meter. It may not be for beginners or after a large meal but it is worth a bit of awkward hobbling in cleats to see what waits at the top.

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Wayfarer Memorial Traverse

Highlight (Segment) • Historical Site

Following the First World War, there was a renewed interest in cycling for leisure. One of these enthusiasts, Walter MacGregor Robinson, would write about his cycling escapades in the "Cycling" publication under the pen-name of "Wayfarer". One of his most famous pieces was published in 1919 entitled "Over the Top", a phrase that would have particular meaning to those recently having returned from fighting in the trenches. This piece told the tale of him and his companions as they cycled out one snowy March evening from the Chester area, overnighting in Llanarmon Dyffryn-Ceiriog and proceeding to ride (and walk) the drovers track from there up and over the Berwyn range; despite the locals' opinions that it was impassable due to the snow. Despite slow progress and many tumbles in the snow, they completed the traverse and returned home successfully.

When Wayfarer died in the 1950s, a memorial plaque was placed at the summit of the pass and it remains a popular route to this day. Arguably one of the earliest origins of off-road "rough stuff" cycling! A copy of the original article is available here: cyclingnorthwales.co.uk/pages/wayfarer.htm

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Tips from the Community

Clive G
October 10, 2025, Bwlch Main Ridge

The Bwlch Main (south west ridge) is a great way to descend from the summit of Snowdon, particularly on a winter's day. Great views all the way to the Irish Sea

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🥾Bwlch Main (Welsh: “narrow pass”) is the exposed ridge that connects the upper slopes of the Rhyd Ddu Path to the Snowdon summit. A narrow crest with steep drops on either side, making it both dramatic and challenging. The ridge is roughly 500–600m long and feels like a true alpine section compared with the grassy and stony lower parts of the trail. 👥 Quiet & scenic: Unlike the “motorway” feel of the Llanberis Path, Bwlch Main gives a real mountain experience with the thrill of exposure. For experienced hikers seeking an exhilarating experience, it significantly quieter (albeit much easier) than Crib Goch. 👁️‍🗨️ On a clear day you can see the Nantlle Ridge, Moel Hebog, and across to the sea. Looking north, Llyn Cwellyn and the ridges rolling out towards Anglesey. ⚠️ Dramatic ridgeline section: The path to the top of Snowdon from this ridge includes the Llechog ridge, which provide exposure (drops, narrower path sections) the narrow section gets to only a couple of feet wide. You will need a good head for heights! And some boots with good grips for some looser rock or scree sections. Check the mountain forecast before heading out 🌬️ In high winds, the ridge can feel intimidating and unsafe. 🌧️❄️In ice, snow, or heavy rain, the narrow path and sloping rock become treacherous. 😶‍🌫️ Cloud / fog can reduce visibility and make it psychologically harder. To sum up: The Bwlch Main ridge is one of Snowdon’s most thrilling features. It adds a real sense of adventure to the Rhyd Ddu Path. On a good day, it’s a highlight: airy, beautiful, and memorable without being a true scramble. But in poor weather, it can turn from exhilarating to dangerous very quickly. For experienced walkers in fair conditions, it’s one of the most rewarding routes to the summit. For those with vertigo or less mountain experience, it may be better admired from afar.

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Cheated using the eeb ,but top day out 👌

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Clive G
August 14, 2025, Cnicht Summit

Rainbows on mountains tend to be a mixed blessing as they are a pretty sure sign that you are about to get wet! However from the photographers point of view they can also signal some great light, with sun mixed in with dark moody clouds. This was the view from near the summit of Cnicht - otherwise sometimes called the Welsh Matterhorn due to its pointy appearance from the village of Croesor. To the right of the picture is Moel Hebog which rises steeply above the pictuesque village of Beddgelert.

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Clive G
August 14, 2025, Cnicht Summit

A fine rocky and in places narrow ridge, and you will often have it all to yourself!

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Beautiful hike, too bad it was cloudy at the top. 12.3 km isn't the actual distance you'll be hiking: it's definitely 10 km more because you can't walk a straight line on this path. It's very busy on this trail; there's a queue to reach the top.

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Crazy hiking all the way up and then seeing a train pass you on the final section!

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Juliane
June 24, 2025, Pen-y-Pass

If you want to park here, you have to reserve a parking space in advance for 20 GBP. We didn't manage to do it, as everything was fully booked. You can then park in Llanberies and take the Sherpa Bus S1 or S2 to Pen y Pass. The bus runs every half hour. From Pen y Pass, you can then choose the Miner's Track or Pyg Track. Have fun!

Translated by Google

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Frequently Asked Questions

What are some challenging mountain passes for cyclists in North Wales?

North Wales offers several challenging passes for cyclists. Horseshoe Pass (Bwlch yr Oernant) is known for its 6 km climb with an average gradient of 5%. Another formidable climb is Bwlch y Groes, sometimes called "Hellfire Pass," which features gradients up to 25%. Bwlch Penbarras also presents a vicious climb from Llanbedr Dyffryn Clwyd, with sections reaching 25%.

Are there any family-friendly mountain passes or walks in North Wales?

Yes, several areas around the mountain passes are suitable for families. While the passes themselves can be rugged, locations like Nant Gwynant Pass offer serene environments with picturesque lakes such as Llyn Gwynant and Llyn Dinas, ideal for gentle walks and watersports. Pen-y-Pass, while a starting point for challenging routes, also provides easy access to scenic views and a youth hostel with amenities, making it a good base for families to explore the lower sections of trails like the Miners' Track.

Where can I find the best viewpoints along North Wales mountain passes?

Many passes offer stunning panoramic views. Pen-y-Pass, situated at the highest point of Llanberis Pass, provides expansive views of surrounding peaks and valleys. Bwlch y Groes offers dramatic scenery and views across the Dyfi Valley, Cadair Idris, and Aran Fawddwy. The Llanberis Pass itself, particularly when descending towards Llanberis, offers spectacular mountain scenery. Nant Gwynant Pass provides beautiful views of Snowdon's peaks alongside its lakes.

What historical or cultural significance do some of these passes hold?

The mountain passes of North Wales are rich in history. Pen-y-Pass, for instance, has a significant mountaineering heritage, famously serving as a training base for Sir John Hunt's 1953 Everest expedition team. The former Gorphwysfa Hotel there, now a YHA youth hostel, was also a haunt of George Mallory. Nant Gwynant Pass contains historic sites like Hafod Lwyfog, dating back to the 1540s. Bwlch y Groes was historically part of a pilgrim route.

What outdoor activities can I do near the mountain passes in North Wales?

The region around North Wales' mountain passes is a hub for outdoor activities. You can find numerous hiking opportunities, including challenging routes up Yr Wyddfa (Snowdon) from Pen-y-Pass, or scenic walks along the Fisherman's Path in Aberglaslyn Pass. For cyclists, passes like Horseshoe Pass offer rewarding climbs. Watersports like windsurfing and canoeing are popular on Llyn Gwynant in Nant Gwynant Pass. For more detailed routes, explore guides like Hiking in North Wales or Gravel biking in North Wales.

Are there specific parking considerations for popular passes like Pen-y-Pass?

Yes, parking at popular locations like Pen-y-Pass requires pre-booking during peak seasons due to high demand. It's advisable to check the Snowdonia National Park website for the latest information on parking availability and booking requirements. The Sherpa bus service provides a convenient alternative for accessing these busy areas, helping to reduce congestion.

What natural features can I expect to see when visiting these passes?

North Wales' mountain passes are characterized by dramatic natural beauty. Llanberis Pass features a narrow, steep-sided valley with rocky crags and boulders, creating a rugged landscape. Nant Gwynant Pass showcases deep glacial valleys, the Afon Glaslyn river, and picturesque lakes like Llyn Gwynant and Llyn Dinas. Aberglaslyn Pass is a narrow, wooded gorge where the Afon Glaslyn river tumbles through dramatic scenery and numerous waterfalls. You'll also encounter expansive views, steep slopes, and unique rock formations across the region.

What is the best time of year to visit the mountain passes in North Wales?

The best time to visit is generally from late spring to early autumn (May to October) when the weather is milder and more stable, making conditions ideal for hiking, cycling, and scenic drives. During these months, you'll experience longer daylight hours and the full beauty of the landscapes. Winter can offer dramatic, snow-covered scenery, but conditions can be challenging and require appropriate gear and experience, especially on higher passes like Bwlch y Groes or exposed ridges like Bwlch Main Ridge.

Are there any cafes or amenities available near the mountain passes?

Yes, amenities are available, particularly near the more popular passes. At Pen-y-Pass, the YHA youth hostel offers a bar and café, and there's an information centre. The village of Llanberis, at the foot of Llanberis Pass, has various cafes and facilities. For cyclists tackling Horseshoe Pass, The Ponderosa Cafe at the summit is a popular stop. Beddgelert, near Nant Gwynant and Aberglaslyn Passes, also provides options for refreshments.

What is the Bwlch Main Ridge and what makes it notable?

Bwlch Main Ridge is an exposed ridge that connects the upper slopes of the Rhyd Ddu Path to the Snowdon summit. It's notable for its narrow crest and steep drops on either side, offering a dramatic and challenging alpine-like section for experienced hikers. While not overly difficult, its exposure requires caution, especially in windy or inclement weather. It's a highlight for those seeking a more exhilarating mountain experience.

Can I find any less-known or 'hidden gem' mountain passes in North Wales?

While many passes are well-known, exploring areas slightly off the main tourist routes can reveal quieter spots. Bwlch y Groes, despite its challenging reputation, is in a more remote location compared to the Snowdonia honeypots, offering a true mountain experience with expansive views away from the crowds. Similarly, exploring the minor roads connecting to passes like Bwlch Penbarras can lead to quieter, yet equally stunning, landscapes.

What is the significance of Llanberis Pass?

Llanberis Pass (Bwlch Llanberis) is an iconic route in North Wales, traversed by the A4086 road between the Snowdon and Glyderau mountain ranges. It's characterized by a rugged, almost lunar-like landscape with rocky crags. It's a gateway to adventure, particularly popular with rock climbers due to renowned crags like Dinas y Gromlech and the 'Three Cliffs.' Driving through the pass offers spectacular views, and it provides easy access to various outdoor activities and the village of Llanberis.

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