4.4
(2189)
16,621
hikers
177
hikes
Hikes around Onllwyn explore the western edge of Bannau Brycheiniog (Brecon Beacons) National Park. The landscape is defined by river valleys, wooded gorges, and open moorland, with trails often leading to waterfalls. Many routes also follow the paths of former tramways, reflecting the area's industrial heritage.
Last updated: July 5, 2026
4.5
(28)
179
hikers
Moderate hike. Great for any fitness level. Mostly accessible paths. Sure-footedness required.
4.7
(11)
115
hikers
6.05km
01:41
110m
110m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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4.7
(14)
47
hikers
6.65km
01:51
120m
120m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.3
(3)
17
hikers
9.86km
02:51
250m
250m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4
hikers
16.9km
04:37
250m
250m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Graig Llech Woods occupy the wooded gorge carved by the Nant Llech, as it makes its way to join the River Tawe. The trail through the woods leads to one of South Wales' most spectacular waterfalls, Henrhyd. This 90-foot (27 m) cascade was used as the entrance to the Bat Cave in Christopher Nolan's 2012 blockbuster The Dark Knight Rises.
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Easy trail to explore on a day out
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Parking availability varies depending on your chosen trail. For popular waterfall walks, you'll often find dedicated pay-and-display car parks near the trailheads, though these can fill up quickly on weekends. For other routes, starting your hike from one of the local villages like Onllwyn or Coelbren can be a good option, where you may find on-street parking. Always check for local parking restrictions before you set off.
Yes, the region offers several trails suitable for families. Many of the paths through the woodlands and along the rivers are relatively flat and manageable for younger children. The Henrhyd Falls Bridge – Henrhyd Falls loop from Coelbren is a great option, offering a rewarding waterfall view without being too strenuous. For a different experience, the paths within Craig Gwladys Country Park are well-regarded for being accessible and clearly signposted.
Most trails around Onllwyn are dog-friendly, but it's essential to keep your dog under control, especially near livestock on open moorland. The woodland and river paths are particularly popular with dog walkers. Remember that some trails can be steep or have stiles, so choose a route that's suitable for your dog's ability. Always carry water for your dog and be prepared to clean up after them.
Onllwyn's unique appeal lies in its blend of dramatic natural beauty and rich industrial history. It's located in the heart of 'Waterfall Country,' offering an incredible concentration of waterfalls accessible via wooded gorges. Many trails also follow the routes of old tramways and railways, like Claypon's Tramway, providing a direct link to the area's coal mining past. This combination of spectacular scenery and historical intrigue sets it apart.
Absolutely. The area is rich with historical routes. A great example is the Henrhyd Falls Bridge – Henrhyd Falls loop from Banwen. This longer walk not only takes you through the beautiful Nant Llech valley but also connects with paths that are part of the wider network of historic trails in the Dulais Valley, reflecting its industrial heritage.
Getting to Onllwyn for a hike via public transport is possible but requires some planning. Bus services connect Onllwyn and nearby villages like Coelbren to larger towns such as Neath, which has a mainline train station. From there, you can catch a local bus to get closer to the trailheads. We recommend checking local bus timetables in advance as services in rural areas can be infrequent.
The area around Onllwyn is full of fantastic hiking spots. Some of the most popular places include:
The trails here are highly rated by the komoot community. Hikers frequently praise the spectacular waterfalls, especially the unique experience of walking behind the curtain of water at Sgwd yr Eira. Many also appreciate the variety of the landscape, from the shaded, peaceful river valleys to the open, panoramic views from the higher moorlands. The clear marking of many paths is another commonly highlighted positive.
There is a wide variety of trails to explore, with over 180 routes mapped on komoot around Onllwyn. These range from short, easy walks perfect for a quick outing to challenging full-day hikes into the heart of the Bannau Brycheiniog (Brecon Beacons) National Park, ensuring there's a trail for every fitness and experience level.
Yes, for those seeking a challenge, the area provides access to some of the higher peaks on the western side of the national park. You can tackle ascents to summits like Fan Gyhirych, which stands at 725 meters. These routes reward hikers with a tougher climb and expansive, panoramic views from the plateau summits, offering a different experience from the sheltered waterfall valleys.
The waterfalls are impressive year-round, but they are at their most powerful and dramatic after a period of heavy rain. The autumn and winter months often provide the best conditions for seeing the falls in full flow. However, hiking in spring and summer is also beautiful, with lush green woodlands surrounding the cascades, though the water flow might be less intense during dry spells.


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