Mountain passes around Llandygai, a village in Gwynedd, Wales, provide access to the mountainous region of Snowdonia. The area is characterized by rugged landscapes, towering peaks, and historical routes. Llandygai serves as a base for exploring several notable mountain passes within Snowdonia National Park. These passes offer diverse terrain for hiking, cycling, and driving, with many featuring significant elevation changes and panoramic views.
Last updated: September 29, 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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A meeting of the ways as well as the col between Tryfan and Glyder Fach
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The high pass between Tryfan and Glyder Fach is also a crossroads for a number of paths - down to the Ogwen valley, but also up to Tryfan and to Glyder Fach via the Bristly Ridge or the bypass route.
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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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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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Great piece of road with dramatic views, a speedy descent toward Llanberis
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Llandygai offers access to several prominent mountain passes within Snowdonia National Park. Highly regarded options include Pen-y-Pass, known as a starting point for routes up Yr Wyddfa (Snowdon), and the dramatic Bwlch Main Ridge. Other significant passes are Llanberis Pass, Bwlch Tryfan, and Bwlch y Groes.
Yes, for experienced hikers seeking a challenge, Bwlch Main Ridge offers an exposed and dramatic experience with steep drops. Bwlch Tryfan is another excellent starting point for challenging ascents and scrambles up Tryfan and Glyder Fach. Bwlch y Groes, also known as 'Hellfire Pass,' is renowned for its steep inclines and demanding routes for walking, cycling, or driving.
Llanberis Pass is famous for its rugged, boulder-strewn, and 'lunar-like' landscape, featuring towering cliffs and buttresses. It offers some of the most dramatic and weather-beaten scenery in Snowdonia, popular with rock climbers and impressive even in cloudy conditions.
You can find numerous hiking routes in the area. For example, Pen-y-Pass is a popular starting point for the Miners' and Pyg Tracks up Yr Wyddfa (Snowdon). You can explore more options in the Hiking around Llandygai guide, which includes routes like the Llyn Idwal loop and challenging ascents of Y Garn and Glyder Fach.
Yes, Telegraph Valley (Maesgwm) is known for its well-made gravel path, making it brilliant for cycling and much quieter than the main Llanberis path. Bwlch y Groes also offers a challenging experience for cyclists with its steep inclines. For more cycling routes, refer to the MTB Trails around Llandygai guide.
Many passes in the region have historical importance. Pen-y-Pass has a rich mountaineering heritage, famously associated with George Mallory. Bwlch y Groes was historically used by pilgrims and later became a testing ground for the British motorcycle and car industries due to its challenging terrain.
Bwlch Glas Pass is a significant meeting point on Yr Wyddfa (Snowdon). It's where the Pyg and Miners' Tracks converge with the summit ridge, joining the Crib Goch, Ranger, and Llanberis Paths. A finger stone marks this point, which is particularly helpful for navigation in poor visibility.
Parking at Pen-y-Pass requires online booking and payment. The standard charge for any length of stay is £10. It's advisable to book in advance as there is often no signal on-site for non-bookers.
While popular passes like Pen-y-Pass can be busy, exploring routes like Telegraph Valley (Maesgwm) offers a quieter experience, especially for cycling. For a more remote feel, Bwlch y Groes, though challenging, might offer a less crowded experience compared to the main Snowdon routes.
Bwlch Tryfan is a crossroads for several trails, offering access to wonderful adventures. It's the starting point for the South Ridge scramble to Tryfan's summit (an easy grade one scramble) and also leads to Bristly Ridge, a trickier grade one scramble to Glyder Fach's summit.
Visitors frequently appreciate the stunning scenery, challenging routes, and the sense of adventure offered by the mountain passes. The region's passes are valued for their dramatic views, especially from exposed ridges like Bwlch Main Ridge, and for providing access to iconic peaks like Snowdon.


See even more epic mountain passes by checking out these guides around Llandygai: