Best mountain passes around Pen-Y-Bont-Fawr are found in a village nestled in the Tanat Valley of Powys, Wales. This area serves as a gateway to the Berwyn Mountains, known for their rolling uplands and dramatic river valleys. The surrounding landscape features steep hills, forests, and waterfalls, providing a base for exploration.
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 offers several distinctive mountain passes. Wayfarer Memorial Traverse is a historical site following an old drovers track. For scenic views and a challenging climb, consider Hirnant Pass Climb from Rhiwargor. Another significant pass is Milltir Cerrig, located on the B4391, which offers expansive views of the Berwyn Mountains and serves as a starting point for exploring the range.
From passes like Milltir Cerrig and Bwlch y Safan Pass, you can expect panoramic views of the surrounding Welsh countryside, including prominent peaks of the Berwyn Mountains such as Moel Sych, Cadair Berwyn, and Cadair Bronwen. The landscape is characterized by wild beauty, heather-clad moorlands, and rugged peaks.
Yes, the Wayfarer Memorial Traverse is a historical site that follows a drovers track over the Berwyn range. It's known as one of the earliest origins of off-road cycling, with a memorial plaque at its summit dedicated to Walter MacGregor Robinson, who wrote about his cycling escapades under the pen-name 'Wayfarer'.
The B4391 over Milltir Cerrig is highly recommended for scenic driving and cycling, offering a rewarding experience with dramatic drops to the valley below. Passes like Wayfarer Eastern Approach and Wayfarer Memorial Traverse are also popular for gravel riding and off-road cycling. For more cycling routes, you can explore the Cycling around Pen-Y-Bont-Fawr guide.
Absolutely. The Hirnant Pass Climb from Rhiwargor is a challenging 4 km climb from Lake Vyrnwy with steep sections through forests. Similarly, the Hirnant Pass Climb (Rhosygwaliau Side) averages 8% gradient, with sections over 10% towards the top, providing a significant challenge for those seeking a strenuous ascent.
Beyond exploring the passes themselves, the area is excellent for various outdoor activities. You can find numerous hiking trails, including easy hikes around Pistyll Rhaeadr, by checking the Easy hikes around Pen-Y-Bont-Fawr guide. Mountain biking is also popular, with trails like the Tomen Cefncoch Motte loop, detailed in the MTB Trails around Pen-Y-Bont-Fawr guide.
While many passes in the Berwyn Mountains offer challenging terrain, the area around Pen-Y-Bont-Fawr also provides access to more manageable routes. The Easy hikes around Pen-Y-Bont-Fawr guide lists several routes, such as the Pistyll Rhaeadr horseshoe walk, which could be suitable for families looking for less strenuous options near the passes.
The Berwyn Mountains and their passes are beautiful year-round, but the best time for hiking and cycling is generally from late spring to early autumn (May to October) when the weather is milder and days are longer. During winter, conditions can be challenging with snow and ice, especially at higher elevations like Milltir Cerrig, though it offers a unique, wild beauty for experienced adventurers.
The mountain passes in this region traverse the Berwyn mountain range, characterized by rolling uplands, heather-clad moorlands, and dramatic river valleys. Elevations can reach up to 486 meters (1,594 feet) at passes like Milltir Cerrig. The terrain varies from relatively smooth double tracks, as seen on the Wayfarer Eastern Approach, to rocky paths and steep climbs through forests.
Specific parking information for individual passes is often available locally. For Milltir Cerrig, parking is typically found near the summit or at the start of the pass from Llangynog or Bala. For other trails and highlights, it's advisable to check local signage or specific route descriptions on komoot for designated parking areas near trailheads.
Generally, no specific permits are required for hiking on public rights of way or open access land in the Berwyn Mountains. However, always respect private land and follow the Countryside Code. If you plan to wild camp, be aware that it is not permitted without landowner permission in most of Wales.
Many trails in the Berwyn Mountains are dog-friendly, but it's crucial to keep dogs under close control, especially in areas with livestock or ground-nesting birds. During lambing season (spring), it's particularly important to keep dogs on a lead. Always clean up after your dog.
Visitors appreciate the challenging climbs and stunning landscapes. For instance, the Hirnant Pass Climb (Rhosygwaliau Side) is described as an 'incredible climb with stunning landscape' and an 'awesome road climb'. The Wayfarer Memorial Traverse is noted for being 'great bit of gravel riding' and rideable even in winter.
While the passes themselves are often in remote areas, villages like Pen-Y-Bont-Fawr and Llangynog, which serve as gateways to the Berwyn Mountains, offer amenities. You can find cafes and pubs in these villages for refreshments before or after your exploration of the mountain passes.


See even more epic mountain passes by checking out these guides around Pen-Y-Bont-Fawr: