4.5
(125)
1,542
hikers
11
hikes
Dog friendly hiking trails around Aberbargoed Grasslands National Nature Reserve traverse a diverse landscape, characterized by vast open grasslands and panoramic views from its southwest-facing hillside in the Rhymney Valley. This area, once a spoil tip, has been transformed into a vibrant woodland park, featuring a mix of marshy grassland, wet heath, scrub, and woodland habitats. The terrain offers varied elevations, providing both gentle paths and more challenging ascents. The reserve is recognized for its ecological importance, supporting a rich…
Last updated: May 13, 2026
4.3
(3)
9
hikers
23.6km
06:50
600m
600m
Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.0
(1)
8
hikers
13.8km
04:01
370m
370m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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5.0
(2)
7
hikers
11.7km
03:21
280m
280m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(4)
26
hikers
7.09km
01:58
120m
120m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
3.0
(1)
2
hikers
12.8km
03:43
340m
340m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Nice ascent from Crosskeys, but watch out for very overgrown pathways on the Machen side. Great views from the top!
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Great panoramic views of surrounding area.
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The coal mining industry transformed the landscape of South Wales and one of the ways it did that was bringing about the construction of railways and, to span valleys, their accompanying viaducts. Hengoed's viaduct is vast and incredibly impressive. Thankfully, after 35 years of being completely closed, it's now a foot and cycle path, and part of the National Cycle Route 47.
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Maesycwmmer (Welsh: Maesycwmer) is a village and community in the centre of Caerphilly County Borough in Wales, within the historic boundaries of Monmouthshire.
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plenty of free parking in Machen next to the village hall and library
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Mynydd Machen is a 1,188-foot (362 m) hill in South Wales which affords glorious views over Newport, Cardiff, Steep Holm, Flat Holm, Brean Down, and the Severn Estuary. The summit is marked by the rock 10 feet (3 m) northwest of the trig point.
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There are over 10 dog-friendly hiking trails available in and around Aberbargoed Grasslands National Nature Reserve. These routes cater to various fitness levels, including easy, moderate, and difficult options, ensuring there's something for every dog and owner.
Yes, there are several easy dog-friendly walks perfect for a leisurely stroll with older dogs or puppies. For example, the Sirhowy Walk loop from Cwmfelinfach is an easy 7.1 km route, and the Oak Tree – Sirhowy Walk loop from Cwmfelinfach offers a shorter 6.1 km option, both providing gentle terrain.
The trails in Aberbargoed Grasslands National Nature Reserve feature diverse terrain. You'll encounter vast open grasslands, marshy areas, scrub, and woodland paths. The reserve is situated on a southwest-facing hillside, so some routes will include gentle ascents and descents, offering panoramic views of the surrounding valleys.
Yes, many of the dog-friendly routes in the area are circular, allowing you to start and finish at the same point. Examples include the Mynydd Machen Summit – Hengoed Viaduct loop from Hengoed for a challenging long walk, or the Sirhowy Walk – Mynydd Machen Summit loop from Cwmfelinfach for a moderate option.
Aberbargoed Grasslands is a Site of Special Scientific Interest (SSSI) and home to important wildlife, including the endangered Marsh Fritillary butterfly and various ground-nesting birds like meadow pipits and skylarks. To protect these species, especially during breeding seasons, it's crucial to keep your dog under close control, preferably on a lead, particularly in grassland areas. This helps preserve the delicate ecosystem.
While specific permits are not typically required for general access, it's essential to follow the Countryside Code. This includes keeping dogs under effective control, especially near livestock or wildlife, and cleaning up after your dog. The reserve's ecological importance, particularly for species like the Marsh Fritillary butterfly, means responsible dog ownership is vital to protect its biodiversity.
Absolutely. The reserve is situated on a southwest-facing hillside, and many trails offer panoramic views of the Rhymney Valley and the surrounding countryside from its higher elevations. These open sections provide excellent opportunities for scenic walks with your dog.
The area is highly rated by the komoot community, with an average score of 4.4 stars from over 100 ratings. Reviewers often praise the diverse landscapes, the sense of freedom in the open grasslands, and the well-maintained informal paths that make for enjoyable dog walks.
Yes, for those seeking a more challenging adventure with their dog, the Mynydd Machen Summit – Hengoed Viaduct loop from Hengoed is a difficult 23.6 km route with significant elevation gain, offering a rewarding experience for fit dogs and their owners.
The reserve is beautiful year-round, but spring and summer offer the chance to see the abundant wildflowers and butterflies, including the Marsh Fritillary. However, these seasons also mean more wildlife activity, so keeping your dog on a lead is especially important. Autumn provides stunning colours, and winter walks can be peaceful, though paths might be muddier.
Yes, beyond the open grasslands, the reserve also encompasses areas of scrub and woodland. The Twyn Tudur – Woodland Stream Trail loop from Newbridge is a moderate 12.8 km route that specifically highlights woodland and stream sections, offering a varied environment for your dog to explore.


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