4.4
(435)
4,689
hikers
170
hikes
Hiking around Henllys offers a diverse landscape characterized by woodlands, open fields, and significant natural features like the Henllys Bog, a Site of Special Scientific Interest. The area provides varied terrain, from tranquil paths through nature reserves to more challenging ascents offering expansive views. Hikers can explore historical sites such as the Henllys Colliery Site and enjoy vistas across the Severn Estuary, Newport, and Cwmbran from various elevated points.
Last updated: July 7, 2026
4.9
(8)
32
hikers
17.2km
05:16
580m
580m
Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.0
(1)
18
hikers
8.06km
02:27
250m
250m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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7
hikers
9.73km
03:00
330m
330m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
1
hikers
3.45km
01:14
210m
200m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Take the longer way. Route is blocked by carpark
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This area is also great for some technical trail running. Plenty of footpaths meander around the hills.
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Twmbarlwm is a prominent hill and archaeological site located near the town of Cwmcarn in South Wales. It is part of the Caerphilly County Borough and is known for both its natural beauty and historical significance. Here are some key points about Twmbarlwm: Key Features: Hillfort: Twmbarlwm is home to the remains of an ancient hillfort, dating back to the Iron Age. The fortifications, which include earthworks and ramparts, suggest it was a significant settlement during that period. Celtic Connections: The name "Twmbarlwm" is thought to derive from Welsh, with "Twm" being a diminutive of "Tudur" and "barlwm" referring to a mound or hill. The site is associated with Celtic history and mythology. Natural Beauty: The hill offers stunning views of the surrounding landscape, including the nearby valleys and mountains. It is a popular destination for walkers, hikers, and outdoor enthusiasts. Archaeological Significance: Twmbarlwm has been the subject of various archaeological studies, which have revealed insights into ancient settlement patterns, defensive strategies, and daily life in prehistoric Wales. Access: The hill is accessible via footpaths, making it a popular spot for local residents and visitors. There are several trails that lead to the summit, offering a rewarding hike. Cultural Heritage: The site is connected to local folklore and legends, contributing to its cultural significance in the region. Visiting: If you plan to visit Twmbarlwm, it’s a good idea to check local resources or hiking guides for specific trails and information about the area. The site is a great way to experience the natural beauty and historical richness of South Wales.
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Steep and rocky in places, makes this a bit of a hike-a-bike if you are on a gravel bike with 40mm tyres
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Very helpful staff who kindly refilled our water bottles - also pointed out that on entering the main carpark there is a public tap next to the unit/toilets on the left.
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A small summit above Risca. Known locally as the "Twmp" (the hump), the pimple or the nipple, due to the shape of the mound on the summit.
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Friendly staff, reasonable prices, very much recommended.
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There are over 180 hiking routes accessible directly from bus stations around Henllys, offering a wide variety of car-free adventures. These routes range from easy strolls to more challenging hikes.
Yes, Henllys offers many easy routes perfect for families. For example, the Henllys Colliery Site loop from Henllys is an easy 3.4 km walk that explores a historical point of interest. The tranquil Henllys Local Nature Reserve also provides well-maintained trails through woodlands and past ponds, ideal for a peaceful family outing.
Many trails offer expansive and diverse views. From routes like Views of Cwmbran and Newport – View of the River Severn loop from Henllys, you can enjoy broad vistas across Cwmbran, Newport, and the River Severn. Higher points like Twmbarlwm Hill provide panoramic views stretching to the Severn Estuary and even Snowdonia National Park on clear days.
Absolutely. You can explore significant historical sites such as the Twmbarlwm Hill and Iron Age hillfort, which offers a glimpse into ancient history alongside stunning views. The Henllys Colliery Site loop from Henllys also takes you past a former colliery site, reflecting the region's industrial heritage. Additionally, sections of the historic Monmouthshire and Brecon Canal Lock are accessible, offering tranquil canal paths.
Yes, for those seeking a greater challenge, there are several difficult routes. The Cwmcarn Pond – View of the River Severn loop from Henllys is a demanding 17.1 km hike with significant elevation changes, offering rewarding views. Other moderate to difficult options explore areas like Blaen Bran Community Woodland.
The area is highly rated by the komoot community, with an average score of 4.3 stars from nearly 400 ratings. Reviewers often praise the diverse landscapes, including charming woodlands and open fields, as well as the peaceful atmosphere and the accessibility of trails directly from public transport.
Yes, Henllys is rich in natural beauty. The Henllys Bog, a Site of Special Scientific Interest (SSSI), is a prime example of valley mire habitat, known for its rare wildflowers like marsh helleborine and diverse insect life including butterflies and dragonflies. You can also find tranquil ponds and lush woodlands throughout the area, providing excellent opportunities for birdwatching and enjoying nature.
Many of the routes available from bus stations in Henllys are circular, allowing you to start and end your hike at the same public transport stop. Examples include the Henllys Colliery Site loop from Henllys and the longer Cwmcarn Pond – View of the River Severn loop from Henllys, providing convenient car-free exploration.
Henllys offers enjoyable hiking experiences year-round. Spring brings vibrant wildflowers, especially in areas like Henllys Bog, and pleasant temperatures. Summer is ideal for longer hikes and enjoying the lush greenery. Autumn provides beautiful foliage, while winter offers crisp air and unique perspectives, though some trails might be muddy. Always check local weather conditions before heading out.
Many trails in Henllys are dog-friendly, offering open spaces and woodlands for your canine companions to enjoy. However, always keep dogs under control, especially near livestock or in nature reserves like Henllys Bog, where ground-nesting birds or sensitive habitats may be present. Please follow the Countryside Code and clean up after your dog.
Yes, some routes will bring you close to beautiful water features. While not directly on every bus station route, nearby attractions include Llandegfedd Reservoir and Cwmbran Boating Lake, which offer scenic spots for a break or further exploration. The Cwmcarn Pond – View of the River Severn loop from Henllys starts near Cwmcarn Pond itself.
While this guide focuses on the hiking trails themselves, the routes are designed to start directly from public transport stops. For specific bus timetables and routes to Henllys and surrounding areas, it's best to consult local public transport websites or apps for the most up-to-date information.


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