Best mountain passes around Trefriw are found within the accessible Snowdonia National Park, offering diverse landscapes and trails. Trefriw serves as a base for exploring these areas, which feature rugged terrain, glacial valleys, and prominent peaks. The region is characterized by its natural features, including towering mountains, clear lakes, and historical sites. These mountain passes provide a variety of walking routes and opportunities for outdoor activities.
Last updated: June 26, 2026
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Excellent connecting ridge between Carnedd Llewellyn and Pen yr Helgi Du. FIne climbing and scrambling routes on the northern side, such as in the Amphitheatre.
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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!
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Currently parking is pre-booking only! All others are directed to the P+R in the village and need to get up by bus or walk.
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Magnificent and dizzying view! However, prefer to go around in the opposite direction to that indicated. The steep slope is very narrow and steep. Easier to go up than to go down.
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Nice steady climb from the Beddgelert side, kicks up in a couple of sections but nothing too stressful. Well worth a visit
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Great road surface great climb one of the greatest climbs I've been on. Fast descent worth the views
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We did this Route clockwise I would suggest to try it anticlockwise
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One of the best ranges to explore bit of a scramble but very enjoyable
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The most popular mountain passes in the wider Snowdonia National Park, accessible from Trefriw, include Pen-y-Pass, which is a key starting point for routes up Yr Wyddfa (Snowdon). Another highly regarded pass is Bwlch Tryfan (Tryfan Pass), known for trails leading to Tryfan and Glyder Fach. Visitors also appreciate Bwlch Eryl Farchog for its stunning views in the quieter Carneddau range.
Yes, several challenging options exist. Bwlch Tryfan provides access to the South Ridge scramble up Tryfan and the trickier Bristly Ridge to Glyder Fach. Bwlch Eryl Farchog in the Carneddau range involves a steep scramble that can be slippery when wet. The Llanberis Pass area also offers challenging rock climbing routes and scrambles like Crib Goch from Pen-y-Pass.
The mountain passes in Snowdonia National Park offer dramatic natural features. In the Ogwen Valley, you'll find towering mountains like Tryfan, Glyder Fach, and Glyder Fawr, along with crystal-clear lakes such as Llyn Ogwen and the glacial Cwm Idwal. The Llanberis Pass features rugged crags, boulders, and panoramic views of Snowdon and the Glyderau massifs, often with waterfalls and streams.
While many passes offer challenging terrain, some areas provide more accessible options. For instance, the area around Llyn Ogwen in the Ogwen Valley offers gentler strolls. Pen-y-Pass is a starting point for various routes, some of which can be adapted for families, though the main routes up Snowdon are strenuous. Always check specific trail difficulties before heading out with family.
The mountain passes around Trefriw are excellent for various outdoor activities. You can enjoy challenging mountain hikes, such as those leading to Tryfan's summit or the Glyderau peaks. Rock climbing is popular in areas like Llanberis Pass. For cycling, there are routes like the 'Ogwen Valley loop from Capel Curig' which is a difficult touring bicycle route. You can find more details on these activities in the Mountain Hikes around Trefriw and Cycling around Trefriw guides.
A primary parking location is Pen-y-Pass, which is superbly located for adventures on the Yr Wyddfa (Snowdon) massif and the Glyderau. Be aware that parking at Pen-y-Pass now requires online booking and payment, with a standard charge for any length of stay. It's advisable to book in advance as there may be no signal on site for non-bookers.
The best time to visit is generally during the spring, summer, and early autumn months (April to October) when the weather is milder and days are longer. However, the weather in Snowdonia can be highly unpredictable and change rapidly, even in summer. Winter hiking is possible for experienced individuals, but conditions can be treacherous with ice and snow, requiring appropriate gear and skills.
Yes, the region is rich in history. The youth hostel at Pen-y-Pass has a significant mountaineering heritage, famously associated with George Mallory. Llyn Ogwen in the Ogwen Valley is, according to legend, the last resting place of King Arthur's sword, Excalibur. The Llanberis Pass area was also used as a training ground for the 1953 Mount Everest expedition.
Many trails and mountain passes in Snowdonia National Park are dog-friendly, but it's crucial to keep dogs on a lead, especially in areas with livestock or ground-nesting birds. Always follow the Countryside Code, clean up after your dog, and ensure they are capable of handling the terrain, as some scrambles can be challenging for pets.
Yes, at Pen-y-Pass, you'll find facilities including toilets, a drinking-water tap, and Mallory's Café. This cafe is a popular spot to refuel after a climb, offering food and drinks. There's also a YHA hostel at Pen-y-Pass.
The Ogwen Valley is a spectacular glacial valley nestled between the Carneddau and Glyderau mountain ranges. It's significant for its rugged and dramatic landscape, featuring towering mountains like Tryfan, Glyder Fach, and Glyder Fawr. It also encompasses Llyn Ogwen and Cwm Idwal, Wales' oldest National Nature Reserve, known for its unique geology and glacial features. The Nant Ffrancon Pass is a natural passage within this area.
While many passes offer challenging terrain, some areas provide more accessible options. For instance, the Ogwen Valley offers diverse trails, including gentle strolls around Llyn Ogwen. It's always recommended to check the specific trail descriptions and difficulty ratings before embarking on a walk, especially if you are a beginner, to ensure it matches your fitness level.


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