Best mountain passes around Llandrillo are situated in the Edeirnion area of Denbighshire, Wales, providing access to parts of the Berwyn Mountains. This region features an ancient landscape with routes through mountainous terrain. The area is known for its quiet upland character, offering a sense of remoteness. It serves as a destination for hikers, cyclists, and those seeking scenic drives.
Last updated: June 26, 2026
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The road from Bala Lake to Lake Vyrnwy is simply one of the most challenging, scenic and highest rides through the Welsh mountains. If you’re fit enough you will find it one of the greatest rides in the British Isles.
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This is the B4391 that travels over the Berwyns, from Bala in the north to Llangynog in the south. The northern half of the route is also the border of Snowdonia national Park. High point of 486m so great views.
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Awesome road climb, with a nasty little surprise kick up at the top.
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Epic road climb. There's a nasty little kick up at the top!!
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stream bridge climb and surrounding hills...
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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: https://www.cyclingnorthwales.co.uk/pages/wayfarer.htm
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Keep an eye out for Red Kites, good place to spot them.
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The region's passes are steeped in history, particularly the Wayfarer Memorial Traverse. This historical site reflects centuries of journeys and is home to the Wayfarer Memorial Stone, dedicated to Walter MacGregor Robinson, a pioneering 'rough-stuff' cyclist. It's recognized as one of the earliest origins of off-road cycling.
Many passes offer extensive panoramic views. From Pen Bwlch Llandrillo, you can enjoy vistas across heather moorland and towards surrounding peaks like Cadair Bronwen, with distant views of Snowdonia on clear days. Passes like Bwlch y Safan Pass also provide great views as you climb through the Berwyns.
Yes, the area offers challenging climbs. For instance, the Hirnant Pass Climb from Rhiwargor is a demanding 4 km ascent with steep sections through forests. Another challenging option is the Hirnant Pass Climb (Rhosygwaliau Side), which averages 8% gradient and ratchets up to over 10% towards the top.
The Llandrillo area is excellent for various outdoor activities. You can find numerous hiking trails, including routes to major Berwyn summits like Cadair Berwyn and Cadair Bronwen. For cyclists, there are challenging road cycling routes and adventurous MTB trails, including sections of the historic Wayfarers Trail.
The Berwyn Mountains, where these passes are located, are known for their wild beauty. While accessible year-round, spring and summer offer the most favorable weather for hiking and cycling, with vibrant heather moorlands. Autumn brings stunning colors. Winter can be challenging due to snow and wet conditions, especially on higher passes like Pen Bwlch Llandrillo, which was historically traversed in snowy conditions by early cyclists.
While many passes offer challenging terrain, the broader Llandrillo area provides various walking routes. For family-friendly options, consider exploring the lower sections of trails or seeking out specific routes designed for easier access. The region's quiet and remote nature offers a peaceful experience for all.
Specific parking information varies by pass. For Pen Bwlch Llandrillo, routes often start from Llandrillo or Cynwyd, where local parking might be available. Milltir Gerrig is on the B4391 road, offering roadside access. Public transport to the immediate vicinity of the passes can be limited due to the remote nature of the Berwyn Mountains, so planning private transport is often recommended.
The Llandrillo mountain passes, nestled in the Berwyn Mountains, are known for their sense of solitude and remoteness. Unlike more crowded ranges, this area offers a quiet, unspoiled upland Welsh experience. It combines ancient landscapes, historical routes like the Wayfarers Trail, and diverse terrain for both challenging adventures and peaceful exploration.
Yes, the Berwyn Mountains are ideal for circular walks. From the summit of Milltir Gerrig, a bridleway extends east towards major Berwyn summits such as Moel Sych, Cadair Berwyn, and Cadair Bronwen, which are often included in strenuous circular walks originating from Llandrillo. You can find various hiking guides for the area that feature circular routes.
Visitors frequently appreciate the challenging terrain for cycling and hiking, the stunning panoramic views, and the sense of solitude. The historical significance of routes like the Wayfarer Memorial Traverse also adds a unique appeal, connecting modern adventurers with past journeys. The wild, unspoiled beauty of the Berwyn Mountains is a consistent highlight.
The Berwyn Mountains are characterized by heather moorland and offer opportunities to spot local wildlife. Keep an eye out for Red Kites, especially around passes like Bwlch y Safan Pass. The remote nature of the area also means a rich variety of flora and fauna adapted to upland environments.


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