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Glyn Tarell

Top 8 Mountain Passes around Glyn Tarell

Best mountain passes around Glyn Tarell are characterized by dramatic high mountain ridges, open moorland, and glacially carved valleys within the Brecon Beacons National Park. The region offers numerous challenging and scenic routes that traverse significant mountainous terrain, effectively acting as passes between prominent peaks. These routes provide spectacular panoramic views and an immersive experience in the wild beauty of the Welsh landscape. Glyn Tarell is a major draw for visitors seeking to explore the mountainous heart of the Brecon Beacons.

Best mountain passes around Glyn Tarell

  • The most popular mountain passes is The Gap Pass, a viewpoint that tackles one of the Brecon Beacons’ classic MTB routes. This pass between Fan-y-Big and Cribyn tops out at 600 metres above sea level and is a technical trail.
  • Another must-see spot is The Gap (Bannau Brycheiniog National Park), a mountain pass lying in the saddle between Pen y Fan and Fan y Big. Best ridden from south to north, the climb is straightforward, and the descent is exhilarating.
  • Visitors also love The Gap Pass (Bwlch ar y Fan), Brecon Beacons National Park, a viewpoint known as a passing between Cribyn and Fan y Big in the shadow of Pen y Fan. The Gap Road is an old main Roman road, providing an encounter with engineered paths.
  • Glyn Tarell is known for challenging mountain passes, scenic viewpoints, and historical sites. The area offers routes for mountain biking, hiking, and exploring diverse natural landscapes.
  • The mountain passes around Glyn Tarell are appreciated by the komoot community, with more than 180 upvotes and over 130 photos shared by visitors.

Last updated: May 19, 2026

The Gap Pass

Highlight (Segment) • Viewpoint

This off road trail tackles one of the Brecon Beacons’ classic MTB routes; the Gap. This is the pass between Fan-y-Big and Cribyn, topping out at 600 metres above sea level. It's a technical trail that will test you, whether on a gravel or mountain bike. Be prepared for a bit of hike-a-bike near the top where it gets really chunky!

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Lying in the saddle between Pen y Fan and Fan y Big, the Gap has long been a focal point for mountain biking in the Brecons.

Best ridden from south to north, the climb is straightforward and the descend down the other side exhilarating; rock steps at the top add spice, but it's technically not too demanding after them. It's an awful lot of fun. though. But at 600m, it can get pretty blowy if the weather's poor!

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Be aware that the surface of this section is really rather tough terrain, and large sections are unrideable with anything short of a full suspension MTB. I attempted this on a decent gravel bike with large volume, off-road tyres, and had to walk about 50% of this stretch; the sections that I was able to ride were very difficult technically, and was very tough going.

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Bwlch Cerrig Duon Pass

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A completely unassuming road that isn't wide or busy enough to warrant road markings but offers up one of the best (and quietest) views of the Western Brecon Beacons or Carmarthenshire Fans. The name comes from the black rocks characteristic of these hills. Underneath these rocky shelves are the Lakes of Llyn Y Fan Fawr and Llyn Y Fan Fach so it's likely the only cars you'll see are those parked up by walkers!

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Bwlch Bryn-Rhudd

Highlight (Segment) • Mountain Pass

The early slopes are very shallow as you pass from one village to another all the way to Glyntawe where the scenery begins to open up and the routes merge. Passing the turn to Trescastle you continue on the A4067 to traverse the Fforest Fwar, the slope now noticeably increasing in pitch.

On the smooth wide road you inch up between the high valley sides that funnel you towards the summit and once you’re pedalling comfortably you should be able to maintain a similar speed all the way to the end. As the road sweeps round to the right you’ll notice the slight V cut in the horizon ahead, this is your goal and is reached after a couple of slight kinks in direction and an ever so slightly tougher finale

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Tips from the Community

JJs MTB Diaries
April 24, 2025, The Gap (Bannau Brycheiniog National Park)

As you descend to this section to the viewpoint I've shared, please be aware that you have rocks and drops to descend that can be slippery when they are wet.

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Gap Road. This was the first track to enable horse-drawn carriages to cross the mountain range. It's thought to be a Roman road, although no archaeological evidence has been found as yet. Turn right onto the gap road and follow this route all the way back to the car park, and to your starting point.

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The Brecon Beacons well known “THE GAP” is a passing between Crybin and Fan y big in the shadow of Pen y fan. Gap Road which will take you through the Neuadd valley. The Gap Road- is actually an old main Roman road. The Gap provides the first encounter with what I call engineered paths.

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The Bike Man
August 12, 2023, The Gap Pass

Great views and riding I've only done it on gravel bikes ascending from the south. It's doable fully loaded too. The Brecon descent is proper big gravel and under biking fun. Or do it flat out on an MTB too.

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Managed on a hard tail with Bikepacking bags. Technical climb with a nice decent towards Brecon.

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The climb up to the saddle could be done on a hardtail but would recommend to ride from the saddle towards Brecon on a full sus

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Big Mullet
July 25, 2023, The Gap Pass

If you are riding a 40mm tyre, loaded gravel bike, I would say the majority of this 5km or so section (not just the lumpy bit near the top) will be easier to walk so bear that in mind if you are attempting it. It’s generally pretty lumpy the whole way and a doable challenge if you are technically good… but you’ll be walking if you aren’t… or if you already have 80km of gravel in the legs like us!! Even a guy we passed on a full sus EMTB had to hike a bike some sections as they aren’t possible to ride. I personally thought we might have an hour of hike a bike… but that quickly turned closer to 3. Absolutely stunning views, a real adventurous challenge. Would like to go back with some chunkier tyres and maybe some suspension!

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Fun fast decent. Watch out for those larger rocks!

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Frequently Asked Questions

What kind of mountain passes can I expect in Glyn Tarell?

Glyn Tarell, within the Brecon Beacons National Park, is known for its dramatic high mountain ridges, open moorland, and glacially carved valleys. While not traditional vehicular passes, the area offers numerous challenging and scenic hiking routes that traverse significant mountainous terrain, effectively acting as passes between prominent peaks. These routes provide spectacular panoramic views and an immersive experience in the wild beauty of the Welsh landscape.

Are there any historical sites or features along the mountain passes in Glyn Tarell?

Yes, some routes in Glyn Tarell follow old 18th-century coach roads, and you can find remnants of ancient farmsteads. For example, The Gap Pass (Bwlch ar y Fan), Brecon Beacons National Park is known for its connection to an old main Roman road, offering an encounter with engineered paths and historical interest.

What are some of the most popular mountain passes for outdoor activities in Glyn Tarell?

Among the most appreciated by the komoot community is The Gap Pass, a technical trail that tackles one of the Brecon Beacons’ classic MTB routes, topping out at 600 metres above sea level between Fan-y-Big and Cribyn. It's a challenging route for both gravel and mountain biking.

What are the best times to visit the mountain passes in Glyn Tarell?

The mountainous routes in Glyn Tarell offer rewarding experiences throughout the year, but visitors should always be prepared for rapid weather changes and low visibility at higher elevations, especially during autumn and winter. Spring and summer generally offer more stable conditions for enjoying the panoramic views, though proper equipment is always essential.

What kind of views can I expect from the mountain passes in Glyn Tarell?

From the high ridges and summits of Glyn Tarell's mountainous routes, hikers are treated to breathtaking 360-degree vistas across the entire Bannau Brycheiniog (Brecon Beacons) National Park. The region is characterized by dramatic, glacially carved cliffs and winding river valleys, offering a sense of wildness and natural grandeur.

Are there challenging routes for experienced hikers or mountain bikers?

Absolutely. The area is known for challenging routes. For mountain biking, The Gap (Bannau Brycheiniog National Park), lying in the saddle between Pen y Fan and Fan y Big, is a focal point. Best ridden from south to north, it offers an exhilarating descent with rock steps at the top, though it can be quite exposed to wind.

What other outdoor activities can I do near the mountain passes in Glyn Tarell?

Beyond exploring the passes themselves, Glyn Tarell is a hub for various outdoor sports. You can find numerous MTB Trails, including challenging loops like the Taff Trail Pen y Fan Loop. There are also many hiking routes and running trails, such as the Brecon Beacons Horseshoe Ridge Trail, catering to various difficulty levels.

Are there any less-trafficked mountain passes with great views?

Yes, Bwlch Cerrig Duon Pass is a completely unassuming road that offers one of the best and quietest views of the Western Brecon Beacons or Carmarthenshire Fans. It's known for its natural beauty, wildness, and unexpectedly smooth tarmac, making it a favourite for many cyclists.

What should I know about the terrain and difficulty of the mountain passes?

The routes in Glyn Tarell involve significant ascents and descents, providing a physical challenge rewarded by unparalleled scenery. The terrain can be diverse, from smooth sections to chunky, technical paths with stony steps and rocks, especially at higher elevations. Always check route descriptions and be prepared for varying conditions.

Are there any passes that offer a good cycling experience?

For cyclists, Bwlch Bryn-Rhudd offers a rewarding experience. The early slopes are shallow, gradually increasing in pitch as you traverse the Fforest Fwar. It's known for its smooth, wide road and the dramatic high valley sides that funnel you towards the summit, culminating in a slightly tougher finale.

What do visitors enjoy most about the mountain passes in Glyn Tarell?

Visitors consistently praise the spectacular panoramic views and the immersive experience in the wild beauty of the Welsh landscape. The challenging yet rewarding hikes, the dramatic glacially carved landscapes, and the sense of remoteness are frequently highlighted as major draws. The opportunity to connect with nature and experience the raw beauty of the Brecon Beacons is a key appeal.

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

YstradfellteMaescarLlangorsTrallongLlangynidrLlanfihangel Cwmdu With Bwlch And CathedineLlanfrynachTalybont-On-UskThe Vale Of GrwyneyTawe-UchafTalgarthLlywelYstradgynlaisCrayLlanddewBreconHonddu IsafYscirCrickhowell

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